[pri.mo] n, pl primos [It, fr. primo first, fr. L primus] (1792): the first or leading part (as in a duet or trio)
[2]pri.mo adv [L, fr. primus] (ca. 1901): in the first place [3]pri.mo adj [prob. fr. It, chief, first] (1972) slang: of the finest quality: excellent