Runner/ˈrʌnər/ Definition 1 of 6Pro Tip 1/3Athletic Context Use 'runner' to describe someone who runs competitively or for exercise. Every morning you can see many runners in the park. Pro Tip 2/3Not a Winner 'Runner' suggests the action of running, without implying success or victory in a race. Despite being a consistent runner, he has not won any races. Pro Tip 3/3Physical Fitness 'Runner' can imply someone is physically fit, as running is a common form of exercise. As a runner, she enjoys great health and stamina.