/tik"euhr/ , n.
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.
[ 1820-30; 1880-85 for def. 4; TICK 1 + -ER 1 ]