also battle-ship, "powerful warship designed to fight in a line of battle," 1794, shortened from line-of-battle ship (1705), a ship of the line, one large enough to take part in a main attack (formerly one of 74-plus guns); from battle (n.) + ship (n.). Later in the U.S. Navy it was used of a class of ships that carried guns of the largest size. They were rendered obsolete by seaborne air power and guided missiles; the last in the U.S. Navy was decommissioned in 2006. Battleship-gray as a color is attested from 1916. Fighter and bomber airplanes in World War I newspaper articles sometimes were called battleplanes, but it did not catch.
late 15c., probably from a survival of an unrecorded Old English *bæcce "something baked" (compare Old English gebæc) from bacan "bake" (see bake (v.)). The generalized sense of "an aggregation of similar articles" is from 1590s. Batch is to bake as watch (n.) is to wake and match (n.2) "one of a pair" is to make. The word was extended 1713 to "any quantity produced at one operation."
"aversion to frogs and toads," 1863, from Latinized form of Greek batrakhos "a frog" + -phobia.