a woman who is not married, especially an older woman who is not likely to marry 老处女;老姑娘 The sisters were to remain spinsters for the rest of their lives. 这对姐妹将在以后的生活中一直是老处女。
Oxford Collocations DictionarySpinster is used before these nouns:- aunt
Word Originlate Middle English (in the sense ‘woman who spins’): from the verb spin + -ster; in early use the term was added to names of women to denote their occupation. The current sense dates from the early 18th cent.