Similar Words to Pacemaker:

Artificial Pacemaker
Cardiac Pacemaker
Pacer
Pacesetter
Sa Node
Sinoatrial Node

Examples:

1. I would I've gotta go have my pacemaker checked.

Definitions of Pacemaker:

1. A leading instance in its field
2. A specialized bit of heart tissue that controls the heartbeat
3. An implanted electronic device that takes over the function of the natural cardiac pacemaker
4. A horse used to set the pace in racing