1. stage left - Noun
2. stage left - Adverb
English Wikipedia has an article on:Blocking (stage)Wikipedia
stage left (uncountable)
(acting) The area to the left of the stage when looking towards the audience
stage left (comparative more stage left, superlative most stage left)
(acting) Located at stage left.
It was then hapless Zarco’s turn to exit, stage left, as the French MotoGP idol parted company with his bike with 20 laps remaining. Source: Internet
Unbeknownst to the crowd the stairway leading to stage left broke near the beginning of the performance but the performance went on with barely a hiccup. Source: Internet