opening night
US /ˈoʊ.pən.ɪŋ ˌnaɪt/
UK /ˈoʊ.pən.ɪŋ ˌnaɪt/
1.
the first public performance or showing of a play, film, opera, or other theatrical production
:
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The cast celebrated after a successful opening night of the new play.
•
Tickets for the opening night sold out in minutes.