alto

(noun) a singer whose voice lies in the alto clef.

(noun) the lowest female singing voice. Synonyms: contralto.

(noun) the highest adult male singing voice. Synonyms: countertenor.

(noun) (of a musical instrument) the second highest instrument in a family of musical instruments.

(noun) the pitch range of the lowest female voice.

(adj) of or being the lowest female voice. Synonyms: contralto.

(adj) of or being the highest male voice; having a range above that of tenor. Synonyms: countertenor.

(adj) (of a musical instrument) second highest member of a group. Examples: "Alto clarinet or recorder."