Word Origin & History
1570s, bragget, probably from M.Fr. braguette "codpiece armor" (16c.), from a fancied resemblance of that article to architectural supports (Sp. cognate bragueta meant both "codpiece" and "bracket"), dim. of brague "knee pants," ultimately from Gaulish *braca "pants," itself perhaps from Germanic (cf.
O.E. broc "garment for the legs and trunk;" see breeches
). The sense might reflect the "breeches" sense, on the notion of two limbs or of appliances used in pairs. The typographical bracket is first recorded 1750, so called for its resemblance to double supports in carpentry. Senses affected by L. brachium "arm."