Solo  —n. (pl. -s) 1 (pl. -s or soli) musical piece or passage, or a dance, performed by one person. 2 thing done by one person, esp. An unaccompanied flight. 3 (in full solo whist) type of whist in which one player may oppose the others. —v. (-es, -ed) perform a solo. —adv. Unaccompanied, alone. [italian from latin: related to *sole3]