Definitions

1. noun

A person who paces, especially a horse that is ridden by a trainer to test its speed and endurance.

“The owner used a pacer to gauge the horse’s performance during the racing season.”

2. noun

A person who walks quickly back and forth in a confined space, often in a state of anxiety or agitation.

“The anxious passenger became a pacer as he waited for the delayed flight to take off.”

3. verb

To walk quickly back and forth, often in a state of anxiety or agitation.

“The nervous student began to pace back and forth across the room.”

4. verb

To ride or lead a horse at a steady speed, typically as a test of its endurance.

“The trainer paced the horse around the track to assess its stamina.”