Pacemaker

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The term pacemaker has multiple meanings:

In biology and medicine,
- Cardiac pacemaker is a group of cells within the heart that together initiate contractions and set the pace of beating.
- Artificial pacemaker may be implanted to provide proper heart rhythm when the body's natural pacemaker does not function properly.
- Brain pacemaker is a device which sends electrical impulses to the brain in order to relieve depression, epilepsy and other conditions.
In the world of high-school and collegiate newspapering, the Newspaper Pacemaker is America's highest honor, awarded to publications by the National Scholastic Press Association and the Associated Collegiate Press, respectively.
In sports, a pacemaker or pacer is a competitor who enters an athletics race with little or no intention of winning, but purely to set a fast pace for other competitors to follow.