D defs.my
Entry 1 sense Webster, 1913

Billethead

/(bĭl"lĕt*hĕd)/ · Bil·let·head · IPA
01 n. A round piece of timber at the bow or stern of a whaleboat, around which the harpoon line is run out when the whale darts off.
  1. 1.
    A round piece of timber at the bow or stern of a whaleboat, around which the harpoon line is run out when the whale darts off.(Naut.)