• of Bass • An edible, spiny-finned fish, esp. of the genera Roccus, Labrax, and related genera. There are many species. • The two American fresh-water species of black bass (genus Micropterus). See Black bass. • Species of Serranus, the sea bass and rock bass. See Sea bass. • The southern, red, or channel bass (Sciaena ocellata). See Redfish. • The linden or lime tree, sometimes wrongly called whitewood; also, its bark, which is used for making mats. See Bast. • A hassock or thick mat. • A bass, or deep, sound or tone. • The lowest part in a musical composition. • One who sings, or the instrument which plays, bass. • Deep or grave in tone. • To sound in a deep tone.