n. n. A fresh-water fish of many species, of the genus Uranidea, esp. Uranidea gobio of Europe, and Uranidea Richardsoni of the United States; -- called also miller's thumb.n. In America, several species of Amiurus; -- called also catfish, horned pout, and bullpout.n. A marine fish of the genus Cottus; the sculpin.n. n. The black-bellied plover (Squatarola helvetica); -- called also beetlehead.n. The golden plover.n. A stupid fellow; a lubber.n. A small black water insect.