ticker

tick +‎ -er

• IPA^(key): /tɪkə(ɹ)/

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• Rhymes: -ɪkə(r)

ticker (plural tickers)

1. One who makes a tick mark.
   • 1992, Parliamentary Debates (Hansard)

     A teacher now is a typist, a printer, a laboratory assistant, a designer of work sheets and booklets, a form-filler, a ticker of boxes and a sender of returns to faculty heads, to head teachers, to education authorities and to the Ministers […]

2. A measuring or reporting device, particularly one which makes a ticking sound as the measured events occur.

   The ticker was showing an increased rate of flow.

3. A ticker tape, either the traditional paper kind or a scrolling message on a screen.

   I checked the prices on the ticker one last time before placing the trade.

   To my surprise, the ticker showed that the deal had already gone through.

4. (colloquial) The heart.

   My ticker gave out and I had to go to the hospital for surgery.

5. (birdwatching, slang) A birdwatcher who aims to see (and tick off on a list) as many bird species as possible.

• news ticker, stock ticker