Sentence:  “… There was a man who always painted marble seats and another who did nothing but sheep. So a fellow I knew determined only to paint backs. Men's backs, women's backs, girls' backs and boys backs. ... his best known <WSD>bacchante</WSD> was described by a critic as all back and no ante#Noun 
Meaning of the word marked with <WSD> tags:  a female bacchanal