From Longman Dictionary of Contemporary Englishold maidˌold ˈmaid noun [countable] old-fashioned not polite MARRYan offensive word for a woman who has never married and is not young anymore SYN spinster
Examples from the Corpus
old maid• She didn't want false teeth; they would make her look like an old maid.• She was an old maid and, I would guess, far too peculiar to gather other suitors.• An old maid, perhaps, but what had Prudence accomplished to get rich?• Half of her wants to be a fella, and the other half's a frustrated old maid.• When she spoke to the old maid, she told her that she would be coming down in the morning.• No, it went Prudence was a rich, ugly old maid courted by Incapacity. 