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Synonyms for Bony (same or very similar meaning)

WordNet sense 1 (composed of or containing bone):
osseous, osteal

WordNet sense 2 (very thin especially from disease or hunger or cold):
cadaverous, emaciated, gaunt, haggard, pinched, skeletal, wasted

WordNet sense 3 (lacking excess flesh):

WordNet sense 4 (having bones especially many or prominent bones):

From the ODE community, based on WordNetadd/edit