ticker
n. countable C1 Advanced US //ˈtɪkɝ// UK //tˈɪkɐ// tick·er
n. a person's heart. It is a casual way to talk about the organ that pumps blood, often when talking about health or age.
n. the human heart. Frequently used in the context of medical health or physical vitality.
He has a strong ticker for a man his age.
The doctor told him that his ticker was in great shape after the stress test.
Despite years of heavy labor, the old sailor boasted that his ticker was as reliable as a Swiss watch, never missing a beat during the storm.
From tick + -er.
Usage
Often used with possessive adjectives like 'my' or 'his' in medical or health-related anecdotes.