'Belaying pin' definitions:

Definition of 'belaying pin'

From: WordNet
noun
A wood or metal bar to which a rope can be secured (as on a ship or in mountain climbing)

Definition of 'Belaying pin'

From: GCIDE
  • Belaying pin \Be*lay"ing pin`\ (b[-e]*l[=a]"[i^]ng p[i^]n`). (Naut.) A strong pin in the side of a vessel, or by the mast, round which ropes are wound when they are fastened or belayed. [1913 Webster]