Definition: (adjective) Denoting a faulty posture characterized by drooping shoulders and a slight forward bending of the back.
Synonyms: hunched, stooped, crooked.
Usage: I remember those girls merely as faces in the schoolroom,…cut off below the shoulders…by the ink-smeared tops of the high desks that were surely put there to make us round-shouldered and hollow-chested.
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Source: The Free Dictionary