all clear

/ɔl ˌklɪər/

Other forms: all clears

Definitions of all clear

1. noun

   a signal (usually a siren) that danger is over
   type of:

   sign, signal, signaling

   any nonverbal action or gesture that encodes a message
2. noun

   permission to proceed because obstacles have been removed
   type of:

   permission

   approval to do something