base runner
noun
,
Baseball.
1.
a player of the team at bat who is on base or is trying to run from one base to another.
Origin
1865-70,
Americanism
Related forms
base running,
noun
Examples from the web for
base runner
It was the second time on the trip a pitcher failed to get down a bunt attempt and a
base runner
was caught.
He is a fine batsman,
base runner
and fielder, and his career on the diamond should be brilliant.