"awkward country fellow," 1560s, probably from Middle Dutch bommekijn "little barrel," diminutive of boom "tree" (see beam (n.)). Apparently, though itself Dutch, it bega [..]

(n) a person who is not very intelligent or interested in culture

A loutish person. (Dutch, boomken, a sprout, a fool.) This word very closely resembles the word “chit.” (See CHITTY.)

a spar fitted over the stern of a veesl to anchor the mizzen sheets. Also found on square rigged ships to take the braces of the yards on the mast in front Source: Maritime Curators Group: Manual of Curatorship

A short spar projecting over the stern of a sailing vessel to sheet the mizzen sail when the mizzen:mast is so far aft that there's not enough room inboard to bring down the sheet and trim the sa [..]

An iron bar (projecting out-board from a ship's side) to which the lower and topsail brace blocks are sometimes hooked. Chains supporting/stabilising the bowsprit.

A short spar projecting over the stern of a sailing vessel to sheet the mizzen

An awkward rustic or country person.

a clumsy, unsophisticated person; a yokel (nautical) a short boom or spar used to extend a sail or secure a stay