Basso a. : The bass or lowest part; as, to sing basso.

Basso a. : One who sings the lowest part.

Basso a. : The double bass, or contrabasso.

Example:
What is falso Basso, or false bass, and how is it done?

Taxonomy
bass, basso profondo, lyric, Bass roles, bass-baritone, voice type, voices, bass voices, middle C, free encyclopedia, Basso cantante, Richard Wagner, baritone, Variations, opera, vibrato, Wolfgang Amadeus Mozart, Giuseppe Verdi.

Defination from the web:
Basso cantante/lyric high bass/lyric bass-baritone. 2.2 Hoher Bass/dramatic high bass/dramatic bass ... According to J. B. Steane in Voices, Singers & Critics, the basso profondo voice "derives from a method of tone-production that eliminates the more Italian quick vibrato. ...