American English

Definition of plumb verb from the Oxford Advanced American Dictionary

     

    plumb

     verb
    verb
    NAmE//plʌm//
     
    plumb something (literary)Verb Forms present simple I / you / we / they plumb
     
    he / she / it plumbs
     
    past simple plumbed
     
    -ing form plumbing
     
     
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  1. 1to try to understand or succeed in understanding something mysterious synonym fathom
  2. 2 She spent her life plumbing the mysteries of the human psyche. He had clearly plumbed the general sense of the message.
  3. Idioms
    plumb the depths of something
     
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    to be or to experience an extreme example of something unpleasant His latest novel plumbs the depths of horror and violence. It was at that stage in her life when she plumbed the depths of despair. The team's poor performances plumbed new depths last night when they lost 10–2.
See the Oxford Advanced Learner's Dictionary entry: plumb