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English definition of “plumb”

plumb

verb [T] uk   /plʌm/ us  

plumb verb [T] (WATER)

to supply a building or a device with water pipes, or to connect a building or a device to a water pipe: We've discovered that our house isn't plumbed properly. I think we can plumb the new bath into the existing pipes. Have you plumbed the dishwasher in yet?

plumb verb [T] (DEEP)

specialized engineering to measure how deep something is, especially water to understand or discover all about something: Now that she had begun, she wanted to plumb her own childhood further.

plumb

adverb uk   /plʌm/ us  

plumb adverb (EXACTLY)

informal exactly: The hotel is plumb in the middle of the town. He hit me plumb on the nose.

plumb adverb (COMPLETELY)

US informal completely: I plumb forgot your birthday.

plumb

adjective [after verb] uk   /plʌm/ specialized us  
exactly straight, usually describing a vertical surface or line: When you hang a door, you need to make sure that it is both level and plumb. out of plumb not straight vertically: The external wall is out of plumb by half a metre.
(Definition of plumb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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