ticker

noun

1. a telegraphic receiving instrument that automatically prints stock prices, market reports, etc., on a paper tape.
2. a person or thing that ticks.
3. Slang. a watch.
4. Slang. the heart.

noun

1. slang
   1. the heart
   2. a watch
2. a person or thing that ticks
3. stock exchange the US word for tape machine (def. 2)

n.1821, “something that ticks,” from tick (2); slang meaning “heart” first recorded 1930. Ticker tape (1902) is from ticker “telegraphic device for recording stock market quotations, etc.” (1883).