Any explosive substance.
Easily driven to anger, usually with reference to a person.
Shocking; startling.
With the capability to, or likely to, explode.
Having the character of an explosion.
A watch (timepiece).
A heart, especially a human one.
One who makes a tick mark.
A birdwatcher who aims to see (and tick off on a list) as many bird species as possible.
A ticker tape, either the traditional paper kind or a scrolling message on a screen.
A measuring or reporting device, particularly one which makes a ticking sound as the measured events occur.