"ticker" in the noun sense
1. heart, pump, ticker
the hollow muscular organ located behind the sternum and between the lungs its rhythmic contractions move the blood through the body
"he stood still, his heart thumping wildly"
2. watch, ticker
a small portable timepiece
3. ticker, stock ticker
a character printer that automatically prints stock quotations on ticker tape
Source: WordNet® (An amazing lexical database of English)
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