The state of being topless, the state of not covering one's torso with garments.

Lacking a top. / (poetic) Very high, towering. / (chiefly of a woman) Not wearing a garment covering the top half of the body; naked from the waist up.

Not wearing any clothes on the upper body.

(automotive) A convertible car having the top retracted or otherwise open.

plural of topless

(radio, dated) A radio talk show format, popular in the 1970s, focusing on intimate sexual discussion with callers.