D defs.my
Entry 1 sense Webster, 1913

crow's-nest

/(krōz"nĕst`)/ · crow's·-nest · IPA
01 n. A box or platform near the top of a mast, esp. in whalers, to shelter the man on the lookout.
  1. 1.
    A box or platform near the top of a mast, esp. in whalers, to shelter the man on the lookout.(Naut.)