#1 ticker n. [heart, pump] 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". wn
#2 ticker n. [watch] a small portable timepiece. wn
#3 ticker n. [stock ticker] a character printer that automatically prints stock quotations on ticker tape. wn
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