mouse click1
noun
The action or an act of depressing a control button on a mouse to select or initiate a function.
Origin
1980s; earliest use found in InfoWorld.
mouse-click2
verb
[with object] To press and release (a button on a mouse); to initiate (a program function) or select (an item) in this way, having first positioned the mouse pointer on the appropriate part of the screen.
Origin
1980s; earliest use found in PC Magazine.