IPA: /ˈrʌnər/
KK: /ˈrʌnər/
A person who runs, especially in races or as a form of exercise.
She is a dedicated runner who trains every morning.
Runner → It is formed from "run" (from Old English "rinnan", meaning to flow or run) and "-er" (meaning a person who). A runner is a person who runs or flows in motion.
Think of someone who is 'flowing' ('rinnan') in motion — that's why a runner is a person who runs.