noun
(law) The defendant's answer to the replication.
A response that answers another response.
A quick response that involves disagreement or is witty, especially an answer to a question.
(US patent law) Re-insertion, typically after allowance of a patent application, of patent claims that had been withdrawn from examination under a restriction requirement.
verb
(intransitive) To issue a rejoinder.
(transitive) To say as a rejoinder.