Verb
close up shop (third-person singular simple present closes up shop, present participle closing up shop, simple past and past participle closed up shop)
(colloquial) To stop what one is doing, especially in the context of a business.
Schwartz’s Yiddish Art Theater closed up shop in the early 1950s, but show business carries on: the site is now a multiplex. [1]
Synonyms: (UK) shut up shop, put up the shutters
Antonym: set up shop