Meaning of “click” - Learner’s Dictionary

click

verb uk us /klɪk/
SOUND [ I, T ]

to make a short, sharp sound, or to use something to make this sound:

The door clicked shut behind him.
COMPUTER [ I, T ]

A2 to press on part of a computer mouse (= small computer control) to make the computer do something:

To start the program, click on its icon.
PEOPLE [ I ] informal

If two people click, they like each other immediately.

IDEA [ I ] informal

to suddenly understand something:

Suddenly everything clicked and I realized where I'd met him.
→ See also double-click , snap your fingers

(Definition of “click verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)