Longman Dictionary of Contemporary English homepage

all clear

 noun
     
all clear, all-clear

the all clear

a) official permission to begin doing something
give (somebody)/get the all clear
We've got the all clear for the new project.
b) PM a signal such as a loud whistle that tells you that a dangerous situation has ended
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary