Meaning of “double-click” - Learner’s Dictionary

double-click

verb [ I, T ] uk us /ˌdʌblˈklɪk/

to quickly press a button twice on a mouse (= small computer control) to make something happen on a computer screen:

Double-click on the icon to start the program.

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