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