Level 6 · word 17,182 of 20,000

pacemaker

/ˈpeɪˌsmeɪkər/ American
  • n. 领跑者, 起搏器
Definition
  • n. a person who sets the pace in a race, or a device that controls heartbeat
Example
Her grandfather got a pacemaker installed after his heart problems.
祖父在心脏出问题后装了心脏起搏器。