Definitions

1. noun

A person who heats or provides heating, especially in a sports stadium or arena.

“The arena’s heating system was maintained by a team of skilled heatsmen.”

2. noun

In track and field, a heatsman is an athlete who runs in the preliminary round of a race, typically to qualify for the final.

“The heatsman for the 400-meter relay team ran a personal best time in the preliminary round.”