bulgen.[OE. bulge a swelling; cf. AS. belgan to swell, OSw. bulgja, Icel. blginn swollen, OHG. belgan to swell, G. bulge leathern sack, Skr. bh to be large, strong; the root meaning to swell. Cf. Bilge, Belly, Billow, Bouge, n.]1. The bilge or protuberant part of a cask.()2. A swelling, protuberant part; a bending outward, esp. when caused by pressure; as, a bulge in a wall.()3. (Naut.) The bilge of a vessel. See Bilge, 2.()Bulge ways. (Naut.) See Bilge ways.()v. i.1. To swell or jut out; to bend outward, as a wall when it yields to pressure; to be protuberant; as, the wall bulges.()2. To bilge, as a ship; to founder.()And scattered navies bulge on distant shores. (Broome.)