A rejoinder is a reply, especially a quick, witty, or critical one, to a question or remark. = retort. a reply, especially a rude one (rejoindre; REJOIN)
a quick reply to a question or remark (especially a witty or critical one); "it brought a sharp rejoinder from the teacher"
(law) a pleading made by a defendant in response to the plaintiff's replication a quick reply to a question or remark (especially a witty or critical one); "it brought a sharp rejoinder from the teacher