an old chestnut (redirected from chestnut)

an old chestnut (informal)

a subject, idea, or joke which has been discussed or repeated so many times that it is not interesting or funny any more. I wondered whether there might, after all, be some truth in the old chestnut that one's school days are the happiest of one's life. Play allows us to rediscover the child in ourselves - that old chestnut.

See also: old