"large spar projecting forward from the bow of a ship," late 13c., probably from Middle Low German bochspret, from boch "bow of a ship" (see bow (n.2)) + spret "pole" (compare Old English spreot "pole," Dutch spriet "spear;" see sprit). The variation in early forms (including boltsprit, bolesprit, boresprit) suggests a non-native word. French beaupre is a Dutch loan word.