baritone(noun, adjective) adjective1. lower in range than tenor and higher than bass- a baritone voice- baritone oboeSimilar word(s): low noun1. a male singerSimilar word(s): barytoneDefinition categories: person, singer, vocalist, vocalizer2. the second lowest adult male singing voiceDefinition categories: communication3. the second lowest brass wind instrumentDefinition categories: man–made, brass