noun
plural -ners
[count] a person who runs as part of a sport, for exercise, or in a race
an animal (such as a horse) that runs in a race
a person who delivers messages, reports, materials, or products either within a business or organization or to outside locations :messenger
a person who brings drugs, guns, etc., to a place illegally and secretly
baseball :a player who is on base or is trying to reach a base :base runner
a long, thin piece or part on which something (such as a sled, skate, or drawer) slides
a stem of a plant that grows along the ground and that forms new plants
a long, narrow carpet for a hall or staircase
a narrow cloth cover for a table or other piece of furniture
do a runner
Brit informal :to leave a place quickly by running especially to avoid paying a bill or to escape punishment
US