Knock meaning

nŏk
The definition of a knock is a rattling sound that an engine makes when there are ignition problems, or is a sound made by hitting, colliding with or tapping on something.

When your ignition is not working properly and your cars engine starts to make a clanging sound that causes you to take it to the mechanic, this is an example of when you have a knock in the engine.

A sound made when someone taps on a door to be let in is an example of a knock.

When you bang your elbow on the door, this is an example of a knock to the elbow.

noun
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Knock is defined as to rap on a door, or to hit something, or to criticize someone or something.

When you use your knuckles to tap on a door so that the people inside the house will hear you and come and open the door, this is an example of when you knock.

When you bang your elbow into a door, this is an example of when you knock your elbow into the door.

When you tip over a glass of water, this is an example of when you knock over the water.

When you say that everyone who watches TV is stupid, this is an example of when you knock TV watchers.

verb
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To strike with a hard blow.

Knocked him on the head.

verb
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To affect in a specified way by striking hard.

Knocked the mugger senseless.

verb
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(dated) To strike for admittance; to rap upon, as a door.
verb
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To cause to collide.

I knocked my head on a low beam.

verb
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To produce by hitting or striking.

Knocked a hole in the wall.

verb
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To find fault with; criticize.

Don't knock the food; it's free.

verb
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To cause to be displaced or unengaged; force.

A wind that knocked the tower over; a blunder that knocked him out of the job.

verb
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(intransitive, dated) To rap one's knuckles against something, especially wood.

Knock on the door and find out if they're home.

verb
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To strike a sharp audible blow or series of blows, as on a door.
verb
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To collide with something.

Knocked into the table.

verb
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To make a pounding or clanking noise.

The car engine is knocking.

verb
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An instance of striking or colliding.
noun
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The sound of a sharp blow on a hard surface.
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A pounding or clanking noise made by an engine, often as a result of faulty fuel combustion.
noun
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A cutting, often petty criticism.
noun
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To strike a blow or blows with the fist or some hard object; esp., to rap on a door.
verb
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To bump; collide; clash.
verb
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To make a thumping, pounding, or rattling noise.
verb
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To find fault; criticize adversely.
verb
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In gin rummy, to end a deal by exposing one's hand and showing a surplus of not more than ten points in unmatched cards.
verb
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To hit; strike.
verb
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To make by hitting or striking.

To knock a hole in a wall.

verb
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To find fault with; criticize adversely.
verb
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The act of knocking.
noun
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A hit; sharp or resounding blow; rap, as on a door.
noun
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A thumping or rattling noise in an engine, etc., as because of faulty combustion.
noun
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An adverse criticism.
noun
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A misfortune or trouble.

The school of hard knocks.

noun
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An abrupt rapping sound, as from an impact of a hard object against wood.

I heard a knock on my door.

noun
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An impact.

He took a knock on the head.

noun
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(figuratively) Criticism.
noun
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(cricket) A batsman's innings.

He played a slow but sure knock of 35.

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(automotive) Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition or the characteristic knocking sound associated with it.
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(intransitive, dated) To bump or impact.

I knocked against the table and bruised my leg.

I accidentally knocked my drink off the bar.

verb
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(colloquial) To denigrate, undervalue.

Don't knock it until you've tried it.

verb
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(soccer) To pass, kick a ball towards another player.
verb
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have it knocked
  • To be certain of success:.
idiom
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knock cold
  • To render unconscious; knock out.
idiom
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knock dead
  • To kill with a blow.
  • To affect strongly and positively:.
    A performance that knocked the audience dead.
idiom
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knock it off
  • To stop doing something. Often used in the imperative:.
    He asked us to knock it off.
idiom
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knock out of the box
  • To force the removal of (an opposing pitcher) by heavy hitting.
idiom
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knock (someone's) socks off
  • To overwhelm or amaze.
idiom
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knock some sense into
  • To beat or hit (someone) in an effort to teach a lesson or cause a person to adopt an acceptable pattern of behavior.
idiom
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knock about
  • To wander about; roam.
  • To treat roughly.
idiom
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knock back
  • To gulp down (an alcoholic drink).
idiom
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knock down
  • To hit so as to cause to fall.
  • To take apart for convenience in shipping.
  • To earn as pay.
idiom
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knock it off!
  • Stop doing that!.
idiom
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knock off
  • To deduct.
  • To do; accomplish.
  • To kill, overcome, etc.
  • To make a knockoff of.
idiom
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knock oneself out
  • To make great efforts; exhaust oneself.
idiom
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knock out
  • To defeat (an opponent) by knocking to the ground so that it is not possible to rise before an official count of ten.
  • To defeat, destroy, etc.
  • To do; make; specif., to compose or write casually or with careless haste.
  • To overwhelm with excited delight; thrill.
idiom
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knock out of the box
  • To make so many hits against (an opposing pitcher) as to cause the pitcher's removal.
idiom
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knock over
  • To burglarize or rob.
idiom
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knock together
  • To cause to collide.
  • To make or compose hastily or crudely.
idiom
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knock up
  • To make pregnant.
idiom
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Origin of knock

  • Middle English knokken from Old English cnocian

    From American Heritage Dictionary of the English Language, 5th Edition

  • Akin to Old Norse knoka (compare Swedish knocka, Danish knuge, to hug) and Middle High German knochen, to hit.

    From Wiktionary