Definition of "conk"

conk¹

/kɒŋk/

noun
plural conks
1. The shelf- or bracket-shaped fruiting body of a bracket fungus (also called a shelf fungus), i.e. a mushroom growing off a tree trunk.
2. (slang) A nose, especially a large one.
3. Alternative spelling of conch
verb
third-person singular simple present conks, present participle conking, simple past and past participle conked
1. (slang) To hit, especially on the head.
  Quotations
  She came skipping to me just now, clapping her little hands and bleating about how very, very happy she was, dear Mrs Travers. The silly young geezer. I nearly conked her one with my trowel. I'd always thought her half-baked, but now I think they didn't even put her in the oven.
  1960, P[elham] G[renville] Wodehouse, chapter XVII, in Jeeves in the Offing, London: Herbert Jenkins

/kɒŋk/

noun
plural conks
1. (US, dated) A hairstyle involving the chemical straightening and styling of kinky hair.
verb
third-person singular simple present conks, present participle conking, simple past and past participle conked
1. (US, dated) To chemically straighten tightly curled hair.
  Quotations
  The barbecue cook, wearing a dirty white apron, his conked hair reddish and metallic in the pale sun, and a cigarette between his lips, stood in the doorway, watching them.
  1957, James Baldwin, “Sonny’s Blues”, in Going to Meet the Man‎, Dial, published 1965

/kɒŋk/