Any object used as a weapon by being thrown or fired through the air, such as stone, arrow or bullet.
A self-propelled projectile whose trajectory can be adjusted after it is launched.
A measuring or reporting device, particularly one which makes a ticking sound as the measured events occur.
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.