clamp off
verb1
To stop or restrict the flow of, with (or as if with) a clamp.
- Calls to unity are almost always issued when one party wants to clamp off debate.1980 April 5, Mary Burns, “Aggrieved Surprise”, in Gay Community News, page 4:
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.