a backlessdress, swimsuit etc does not cover much or any of a woman’s back 〔连衣裙、泳装等〕露背的
Examples from the Corpus
backless• I waited, sitting as quietly and unobtrusively as possible on the lowbackless benches in front of the ground-floor lobbywindows.• She would have turned heads anywhere in a navybluebackless dress which rose just above her knee.• There, in the smokycrowd, you might encounter Marlene Dietrich in a backlessgown or the novelist Sybil Bedford.• Although I doubt even Camilla would wear the backlessLycrafrock that this woman almost had on.• To go with it she wore a turquoise-and-gray-striped apron and matchingbacklessslippers.• The black taffetasilkballgown was strapless and backless with a plunging, gravity-defying decolletage.