How to say "bunk" in Japanese

• 簡易ベッドかんいベッド
  nounIts basic sense is a simple, temporary bed — a cot — so as 'bunk' it is a less common, marginal match, fitting where English means such a simple bed, as with a guest's cot.
  簡易かんいベッドの組み立くみたて方かたを教おしえてもらえますか。↗

  Will you show me how to set up a cot?
• 蚕棚かいこだな
  nounRefers to a bunk as one of a tier and, by extension, a cramped bedroom; literally a shelf for raising silkworms, it is a vivid, less common choice rather than an everyday word.

Both are less common choices: use 「簡易ベッド」 for a bunk meaning a simple cot-like bed, and 蚕棚 for a bunk as one of a tier of bunks or, figuratively, a cramped bedroom.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 簡易ベッドかんいベッドcot
• 蚕棚かいこだなbunk