Knock under

verb, slang

Definitions

Verb
  1. 1
    To acknowledge oneself conquered; to submit, to yield. dated, intransitive

    "I pull the second best trigger in this county. I knock under to Natty Bumppo there, sin' he shot the pigeon."

  2. 2
    To die. dated, intransitive, slang

Etymology

Perhaps from the old practice of knocking under the table with the knuckles, when conquered. Compare knuckle under

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