Pronunciation: (top'lis), [key]
1. lacking a top: a topless bathing suit.
2. nude above the waist or hips: topless dancers.
3. featuring entertainers, waitresses, etc., who are nude above the waist or hips: a topless bar.
4. extremely high: a topless mountain.
5. Obs.without a peer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.