BUMKIN

Noun

bumkin (plural bumkins)

(nautical) A short outrigger projecting from the side of the aft part of a square-rigged sailing ship, used as an attachment point for a rope (brace) used to set a yard-arm at different angles to a mast so to allow the ship to sail at different angles to the wind.

Source: Wiktionary

Bum"kin, n. Etym: [Boom a beam + -kin. See Bumpkin.] (Naut.)

Definition: A projecting beam or boom; as: (a) One projecting from each bow of a vessel, to haul the fore tack to, called a tack bumpkin. (b) Onr from each quarter, for the main-brace blocks, and called brace bumpkin. (c) A small outrigger over the stern of a boat, to extend the mizzen. [Written also boomkin.]

Source: Webster’s Unabridged Dictionary 1913 Edition