safety curtain
US /ˈseɪf.ti ˌkɝː.tən/
UK /ˈseɪf.ti ˌkɝː.tən/
1.
a fireproof curtain that can be lowered to separate the stage from the auditorium in a theater, typically in an emergency
:
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During the fire drill, the safety curtain was lowered to demonstrate emergency procedures.
•
The theater's safety curtain is a crucial part of its fire protection system.