noun
plural -tains
[count] :a piece of cloth that hangs down from above a window and can be used to cover the window
[count] :a piece of cloth or other material that is hung to protect or hide something
[count] :a very large piece of cloth that hangs at the front of a stage and that is raised when a performance begins and lowered when a performance ends
[singular] :the time when a curtain is raised or lowered at the beginning or end of a performance
[count] :something that covers or hides something else - usually + of
be curtains for
informal :to be the end, failure, or death of (someone or something)
verb
-tains; -tained; -taining
curtain off
[phrasal verb]
curtain (something) off or curtain off (something) :to separate or cover (something) by using a curtain