n. Originally, the perch, but now restricted to fishes more or less like the true perch.n. Same as bast.n. The American linden or lime-tree, Tilia Americana. See basswood.n. A mat made of bass or bast; a bass-mat; hence, any thick mat or matting; formerly, a straw hassock or cushion.In music, low; deep; grave.n. In music, the lowest part in the harmony of a musical composition, whether vocal or instrumental.n. A male voice of the lowest or gravest kind, having a compass of about two octaves from the second F below middle C, or lower.n. A singer having such a voice.n. A musical instrument of any class having a deep, grave tone, excelled in gravity only by the contrabass.n. Same as bass clef (which see, under clef).To sing or play the bass part of; accompany with the bass.To sound in a deep tone.To take the bass part in a concerted piece of music: as, he basses very steadily.n. In coal-mining, black carbonaceous shale.To kiss.n. A kiss; a buss.n. The commercial name of a fiber, resembling horsehair or wire, obtained from the sheathing leaf-bases or the leaf-stalks of certain palms. It is dark brown or black in color, and is used for brooms, brushes, ropes, and cables. Also called piassava. See bast-palm, piassava, and bassine.