all clear noun
Learner's definition of ALL CLEAR
the all clear
: a signal telling you that a situation is no longer dangerous警报解除信号；险情解除信号 -
“How will we know when it's safe to leave?” “I'll give you the all clear by blowing a whistle.”“我们如何才能知道何时可以安全离开？”“我会吹哨通知你们危险解除。”
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Doctors have given her the all clear [=have told her that she is healthy] and she should be back at work next week.医生们告诉她，她已经康复，下周应该就能回去上班了。