noun

An adult male singing voice between tenor and bass.

he sang in a rich baritone

resonant,sonorous,ringing,resounding,reverberating,reverberative,reverberant,reverberatory,carrying,thundering,thunderous,rumbling,roaring

adjective

Second lowest in musical pitch.

I headed to the end of the hall, where all the saxophones had congregated, and saw three out of the four different types of saxophones; the baritone, tenor and alto.