Dictionary

bring down the curtain en · VERB

(idiomatic, qualifier:at, with-on) To bring something to an end.
- At the other end of the day, Crewe Carriage Sidings is the destination of rolling stock from all routes, which bring terminating workings into the station before going to the depot for servicing. The 2155 ex-Cardiff brings down the curtain at 0103. 2020 June 17, David Clough, “Then and now: trains through Crewe”, in Rail, page 63:

Spelling	Features	Labels	Source
brought down the curtain	Tense=Past, VerbForm=Part		lexicographic
brought down the curtain	Tense=Past		lexicographic
bringing down the curtain	Tense=Pres, VerbForm=Part		lexicographic
brings down the curtain	Number=Sing, Person=3, Tense=Pres		lexicographic
bring the curtain down		alternative	lexicographic