n. A duck of the genus Mareca, belonging to the subfamily Anatinæ.n. By extension, some or any wild duck, except the mallard: usually with a qualifying term.n. The gad wall, Chaulelasmus streperus: more fully called gray widgeon. See cut under Chaulelasmus.n. The pintail, Dafila acuta: more fully, gray or kite-tailed widgeon, or sea-widgeon. See cut under Dafila.n. The wood-duck, Aix sponsa: more fully, wood-widgeon. See cut under wood-duck.n. The ruddy duck, Erismatura rubida. See cut under Erismatura.n. A fool: alluding to the supposed stupidity of the widgeon. Compare goose, gudgeon.n. A small teasing fly; a midge.n. The goldeneyed duck, Clangula glaucion.n. The male goosander, Mergus merganser.