From The Collaborative International Dictionary of English v.0.48 :
Round-shouldered \Round"-shoul`dered\, a. Having the shoulders stooping or projecting; round-backed. [1913 Webster]From WordNet (r) 3.0 (2006) :
round-shouldered adj 1: having the back and shoulders rounded; not erect; "a little oldish misshapen stooping woman" [syn: hunched, round-backed, round-shouldered, stooped, stooping, crooked]