The all clear is a signal that a dangerous situation, for example an air raid, has ended.
The all clear was sounded about 10 minutes after the alert was given.
All clear is also a convention.
'All clear,' Misha growled.
2. singular noun
If someone in authority gives you the all clear, they give you permission to continue with a plan or activity, usually after a problem has been sorted out.
I was given the all clear by the doctor to resume playing.
all clear in British English
noun
1.
a signal, usually a siren, indicating that some danger, such as an air raid, is over
2.
an indication that obstacles are no longer present; permission to proceed
she received the all clear on the plan
all-clear in American English
(ˈɔlˈklɪr)
noun
a siren blast or other signal that an air raid or practice alert is over
Examples of 'all clear' in a sentence
all clear
Holidaymakers were checked over in hospital before getting the all clear.
The Sun (2015)
And she is hoping to get the all clear from cancer in four years.
The Sun (2013)
After her first all clear, she became almost giddy with the triumph of it all.
Times, Sunday Times (2016)
If he gets the all clear, you both need to make changes to get your marriage back on track.
The Sun (2011)
I hope we're all clear about that.
Times, Sunday Times (2014)
BRITISH tourists caught in a hotel lockdown during an Ebola scare spoke yesterday of their ordeal, after getting the all clear.