ticker

Meanings

1. One who makes a tick mark.
2. A measuring or reporting device, particularly one which makes a ticking sound as the measured events occur.
3. A ticker tape, either the traditional paper kind or a scrolling message on a screen.
4. A heart, especially a human one.
5. A watch (timepiece).
6. A birdwatcher who aims to see (and tick off on a list) as many bird species as possible.
7. A beer drinker who aims to try as many different beers as possible and keeps a record of all the beers they have drunk.

Etymology

From tick + -er.