Definition of "close down"

close down

/kləʊzˈdaʊn/

verb
third-person singular simple present closes down, present participle closing down, simple past and past participle closed down
1. (transitive, intransitive) To stop trading as a business.
  Quotations
  Eventually the NUR overplayed its hands with an all-out strike. And when Peter Parker, the then-chairman of BR, who was well regarded among his staff, called their bluff by threatening to close down the entire network, they caved in.
  2022 December 14, Christian Wolmar, “Productivity should play no part in pay negotiations”, in RAIL, number 972, page 46
2. (transitive) To surround someone, as to impede their movement.