Definition of "bunk"

bunk¹

/bʌŋk/

noun
plural bunks
1. One of a series of berths or beds placed in tiers.
  Quotations
  The men resided in a huge bunk house, which consisted of one room only, with a shack outside where the cooking was done. In the large room were a dozen bunks ; half of them in a very dishevelled state, […]
  1913, Robert Barr, chapter 6, in Lord Stranleigh Abroad‎
2. (nautical) A built-in bed on board ship, often erected in tiers one above the other.
3. (military) A cot.
4. (US) A wooden case or box, which serves for a seat in the daytime and for a bed at night.
5. (US, dialect) A piece of wood placed on a lumberman's sled to sustain the end of heavy timbers.
verb
third-person singular simple present bunks, present participle bunking, simple past and past participle bunked
1. To occupy a bunk.
2. To provide a bunk.

bunk²

/bʌŋk/

noun
uncountable
1. (slang) Bunkum; senseless talk, nonsense.
  Quotations
  “You can’t pull any bunk like that on us!” roared Quelch. “We’ve had enough of this flapdoodlery! Take your money, Mrs. Clinton, and sign the deed.”
  1927, Arthur Train, When Tutt Meets Tutt, New York: Charles Scribner's Sons, page 47
2. (slang) A specimen of a recreational drug with insufficient active ingredient.
  Quotations
  I still can get off with a pound of bunk and pretend it's some Runtz
  2020 July 18, Rio Da Yung OG, featured by T LB$ (lyrics and music), “Toledo 2 Flint”, in The World is Yours‎, 1:26–1:28
adjective
not comparable
1. (slang) Defective, broken, not functioning properly.

bunk³

/bʌŋk/

verb
third-person singular simple present bunks, present participle bunking, simple past and past participle bunked
1. (Britain) To fail to attend school or work without permission; to play truant (usually as in 'to bunk off').
2. (dated) To expel from a school.
  Quotations
  She was bunked from the convent last term. I don't quite know what for.
  1945, Evelyn Waugh, chapter 4, in Brideshead Revisited […], 3rd edition, London: Chapman & Hall, book 1 (Et in Arcadia Ego), pages 83–84
3. (slang) To depart; scram.
  Quotations
  "They're moving off," he said. " […] [T]he funny little man with the beard like a goat is going a different way from everyone else — the gardeners will have to head him off. I don't see Mademoiselle, though. The rest of you had better bunk. […] "
  1907, Edith Nesbit, The Enchanted Castle