Smooth  —adj. 1 having an even surface; free from projections, dents, and roughness. 2 that can be traversed without check. 3 (of the sea etc.) Calm, flat. 4 (of a journey etc.) Easy. 5 not harsh in sound or taste. 6 suave, conciliatory; slick. 7 not jerky. —v. 1 (often foll. By out, down) make or become smooth. 2 (often foll. By out, down, over, away) reduce or get rid of (differences, faults, difficulties, etc.) In fact or appearance. —n. Smoothing touch or stroke. —adv. Smoothly.  smoothly adv. Smoothness n. [old english]