Bass
Part of speech: adjective
Definition: Of sound, a voice or an instrument, low in pitch or frequency.
Part of speech: noun
Definition: A low spectrum of sound tones. A section of musical group that produces low-pitched sound, lower than tenor. A male singer who sings in the bass range. An instrument that plays in the bass range, in particular a double bass, bass guitar, electric bass or bass synthesiser. The clef sign that indicates that the pitch of the notes is below middle C; a bass clef. The perch; any of various marine and freshwater fish resembling the perch, all within the order of Perciformes.
Subwoofer
Part of speech: noun
Definition: An electronic speaker designed to produce low-frequency sound, especially bass.