tick n


  1. Click; noise of a timepiece; tiny quick sound that marks the passing of a second in time.

tick [-ed, -ing] v


  1. Mark the passage of a second; make a sound to indicate the passing of a moment in time; [fig.] beat; pulse; maintain the heart's pumping of blood.
  2. Move; mark time; [fig.] breathe; be mortal; have a heartbeat.