wait in the wings

US /weɪt ɪn ðə wɪŋz/
UK /weɪt ɪn ðə wɪŋz/
"wait in the wings" picture
1.

舞台袖で待機する, 虎視眈々と狙う

to be ready to do something or to take someone's place, especially in a play or other performance

:
The understudy is waiting in the wings, ready to perform if the main actor falls ill.
代役は舞台袖で待機しており、主役が病気になったらいつでも演じる準備ができている。
There are several talented young players waiting in the wings for a chance to join the first team.
何人かの才能ある若手選手が、トップチームに加わる機会を虎視眈々と狙っている