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plumb

Exactly vertical; straight up and down. / To measure the depth of a body of water using a weighted line. / To explore or examine something thoroughly in order to understand it. / To install or repair the plumbing system of a building.

/plʌm/

AdjectiveTransitive Verb
past: plumbedpp: plumbeding: plumbing

💬Casual Conversation

🎬Tuesday afternoon, David is attempting a DIY home improvement project in the garage.
David Smith

Quick check. Does this shelving unit look plumb to you?

Quick check. Does this shelving unit look plumb to you?

David Smith
Chloe Smith
Chloe Smith

it's literally leaning. stop capping and just call a pro.

it's literally leaning. stop capping and just call a pro.

Meanings

Adjective

Exactly vertical; straight up and down.

The carpenter used a level to ensure the wall was perfectly plumb.

Transitive Verb
[~ water]

To measure the depth of a body of water using a weighted line.

The sailors attempted to plumb the depths of the bay before anchoring.

Transitive Verb
[~ concept]

To explore or examine something thoroughly in order to understand it.

The philosopher sought to plumb the mysteries of human consciousness.

Transitive Verb
[~ building]

To install or repair the plumbing system of a building.

They hired a professional to plumb the new kitchen extension.

Etymology

Derived from the Latin word plumbum, meaning lead, referring to the lead weights used on a line to determine verticality or depth.

Related Words

Last Updated: June 22, 2026Report an Error