A construction worker using a plumb line.
- Plumb is defined as something done exactly or completely.
An example of plumb is when you sit right in front of the TV, or plumb in front of the TV.
- The definition of a plumb is a lead weight at the end of a line which is used to measure how deep water is or to determine a vertical line.
An example of a plumb is a weight which is attached to a length of heavy string.
- To plumb means to connect or fix pipes that control the flow of water.
An example of plumb is when the pipes in your house are connected so that water can flow.
Origin of plumbMiddle English plumbe ; from Middle French plomb ; from Classical Latin plumbum, lead ; from non-IE source from source Classical Greek molybdos
- in a vertical direction; straight down
- Informal entirely; wholly; absolutely: plumb tired out
Origin of plumbME plumben
- to test or sound with a plumb
- to discover the facts or contents of; fathom; solve; understand
- to make vertical
- to weight or seal with lead
- to equip with plumbing
out of plumb
- A weight on the end of a line, used to determine water depth.
- A weight on the end of a line, used especially by masons and carpenters to establish a true vertical.
- In a vertical or perpendicular line.
- Informal Directly; squarely: fell plumb in the middle of the puddle.
- also plum Informal Utterly; completely: plumb worn out. See Note at right.
- Exactly vertical. See Synonyms at vertical.
- also plum Informal Utter; absolute; sheer: a plumb fool.
verbplumbed, plumb·ing, plumbs
- To determine the depth of with a plumb; sound.
- To test the verticality or alignment of with a plumb.
- To straighten or make perpendicular: plumb up the wall.
- To examine closely or deeply; probe: “Shallow ideas are plumbed and discarded” (Gilbert Highet).
- To seal with lead.
Origin of plumbMiddle English, lead, a plumb, from Old French plomb, from Latin plumbum, lead.
(comparative more plumb, superlative most plumb)
(third-person singular simple present plumbs, present participle plumbing, simple past and past participle plumbed)
- To determine the depth, generally of a liquid; to sound.
- To attach to a water supply and drain.
- To think about or explore in depth, to get to the bottom of, especially to plumb the depths of.
- To use a plumb bob as a measuring or aligning tool.
- To accurately align vertically or horizontally.
- (dated) To seal something with lead.
- (intransitive) To work as a plumber.
- (rare) To fall or sink like a plummet.
- (nautical) To position vertically above or below.
From Old French *plombe, from Latin plumba (plural of plumbum).
- (chemistry) Alternative form of plumbo-; used before a vowel.