- 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.
- 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.
A man knocks on a door.
knock definition by Webster's New World
- to strike a blow or blows with the fist or some hard object; esp., to rap on a door
- to bump; collide; clash
- to make a thumping, pounding, or rattling noise: said of an engine, etc.
- ☆ Informal to find fault; criticize adversely
- ☆ Gin Rummy to end a deal by exposing one's hand and showing a surplus of not more than ten points in unmatched cards
Origin: Middle English knokken ; from Old English cnocian, akin to Old Norse knoka, Middle High German knochen, to press ; from echoic base from source knack
- to hit; strike
- to make by hitting or striking: to knock a hole in a wall
- ☆ Informal to find fault with; criticize adversely
- the act of knocking
- a hit; sharp or resounding blow; rap, as on a door
- a thumping or rattling noise in an engine, etc., as because of faulty combustion
- ☆ Informal an adverse criticism
- Informal a misfortune or trouble: the school of hard knocks
knock definition by American Heritage Dictionary
verb knocked, knock·ing, knocks verb, transitive
- To strike with a hard blow.
- To affect in a specified way by striking hard: knocked the mugger senseless.
- To cause to collide: I knocked my head on a low beam.
- To produce by hitting or striking: knocked a hole in the wall.
- To instill with or as if with blows: We tried to knock some sense into his head.
- Slang To find fault with; criticize: Don't knock the food; it's free.
- To strike a sharp audible blow or series of blows, as on a door.
- To collide with something: knocked into the table.
- To make a pounding or clanking noise: The car engine is knocking.
- An instance of striking or colliding; a blow.
- The sound of a sharp tap on a hard surface; a rap.
- A pounding or clanking noise made by an engine, often as a result of faulty fuel combustion. Also called ping1.
- Slang A cutting, often petty criticism.
Origin: Middle English knokken, from Old English cnocian.
knock - Phrases/Idioms
knock aboutor knock aroundInformal
- to wander about; roam
- to treat roughly
- to hit so as to cause to fall
- â to take apart for convenience in shipping
- to sell at auction
- to indicate the sale of (an article) at an auction, as by a blow of the auctioneer's hammer
- Slang to earn as pay
knock for a loopor throw for a loopâ Slang
- to punch very hard
- to defeat or overcome
- to shock, amaze, confuse, etc.
knock it off!â
- to stop working
- to leave off (work)
- Informal to deduct
- Informal to do; accomplish
- â Slang to kill, overcome, etc.
- â Slang to make a knockoff of
knock oneself outâ
- Boxing to defeat (an opponent) by knocking to the ground so that it is not possible to rise before an official count of ten
- to make unconscious
- to make exhausted; tire out
- to defeat, destroy, etc.
- Informal to do; make; specif., to compose or write casually or with careless haste
- Slang to overwhelm with excited delight; thrill
knock out of the boxâ
Etymology: in allusion to the pitcher's box, the area formerly marked around the pitching rubberBaseball to make so many hits against (an opposing pitcher) as to cause the pitcher's removal
- to cause to collide
- to make or compose hastily or crudely
- Brit., Informal
- to tire out; exhaust
- to wake (someone), as by knocking at the door
- â Slang to make pregnant
knock (oneself) out
knock out of the box
- To kill with a blow. Slang
- To affect strongly and positively: a performance that knocked the audience dead.
knock it off
have it knocked