Tick

In World of Warcraft, tick may refer to:
 * 1) A time increment used for over time effects (Channeling, DoT, HoT, etc.):
 * 2) * 1 tick is every time the spell's overtime effect happens. Many effects tick once every two seconds, but not all.
 * 3) The bronze drake Tick guarding the Caverns of Time together with Chronalis and Occulus.
 * 4) Blood ticks