n.
Function: intransitive verb
Date: 1721
1 : to make the sound of a tick or a series of ticks
2 : to operate as a functioning mechanism : RUN <tried to understand what made him tick > <the motor was tick ing over quietly>
transitive verb
1 : to mark with a written tick : CHECK ― usually used with off < tick ed off each item in the list>
2 : to mark, count, or announce by or as if by ticking beats <a meter tick ing off the cab fare>
3 : to touch with a momentary glancing blow < tick ed the ball>