Definition of click:
(n) :
a brief, sharp, not particularly loud, relatively
high-pitched sound produced by the impact something small and hard against something hard, such as by the operation of a
switch, a
lock or a
latch, or a finger pressed against the thumb and then released to strike the hand; an
ingressive sound made by
coarticulating a
velar or
uvular closure with another closure
"I turned the key, the lock gave a click and the door opened."
(v) :
to operate (a switch, etc) so that it makes a click; to press and release (a button on a computer mouse)
"he bent his fingers back until the joints clicked."
(interjection) :
the sound of a click
"click! The door opened."