an unmarried man
When I said I would die a bachelor, I did not think I should live till I were married — Shakespeare
a man past the usual age for marrying or one who seems unlikely to marry
(used before a noun) suitable for or occupied by a bachelor
a bachelor flat
(often Bachelor) in degree titles: a recipient of what is usu the lowest degree conferred by a college or university
Bachelor of Arts
a male animal, e.g. a fur seal, without a mate during breeding time
in medieval times, a young knight who followed the banner of another knight
bachelordom noun
bachelorhood noun
[Middle English bacheler from Old French, prob from medieval Latin baccalarius tenant farmer, squire, advanced student, of Celtic origin]