baritone

noun

• 1an adult male singing voice between tenor and bass:he sang in a rich baritone
• a singer with a baritone voice.
• a part written for a baritone voice.

• 2 (in full baritone horn) an instrument that is second lowest in pitch in its family.
• a large, valved brass instrument in coiled oval form, used especially in military or street bands.

adjective

• second lowest in musical pitch.