C2 [ I or T ] to cause something that is thin to break suddenly and quickly with a cracking sound:

C2 [ I ] to suddenly become unable to control a strong feeling, especially anger:

[ I or T, usually + adv/prep ] to move into a position quickly, producing a short noise as if breaking:

[ I + adv/prep ] to quickly return to a previous place or condition:

[ I ] If an animal snaps, it tries to bite someone:

C2 [ I or T ] to say something suddenly in an angry way:

[ I or T ] to take a lot of photographs quickly:

[ I or T ] US to fasten using two small pieces of metal or plastic, one of which is pushed into the other:

[ C usually singular ] a sudden loud sound like something breaking or closing:

[ C ] US UK press stud, snap fastener a small piece of metal or plastic used to fasten clothes, with two usually round parts, one of which is pushed into the other

[ C ] UK informal an informal photograph that is not very skilful or artistic:

[ U ] a card game in which the players compete to call out the word "snap" when they see two cards that have the same value:

[ S ] US informal something that can be done without any difficulty:

[ C ] in American football, the act of passing the ball backward to start play

done suddenly without allowing time for careful thought or preparation:

"Snap!" is what you say in the game of snap when two cards of the same value have been played.

UK informal something that you say when you notice that two things are the same: