(chiefly US) A raft, kayak, or similar watercraft used especially for traveling with the current of a river in a swift manner. / (chiefly US) A person who uses such a watercraft.

A euphoric release of endorphins and endocannabinoids reported to result from strenuous exercise.

Any of various overuse injuries involving pain around the kneecap.

(chiefly Indian sub-continent) a person who chases kites that have been cut free during kite fighting contests.

One who does not take part in the physical activity of running. / A racehorse that is withdrawn before the start of a race.

Alternative form of runner's diarrhea

A condition among runners characterised by the urgent need for a relatively liquid bowel movement during a run.

(slang) runner's diarrhea

(baseball) Synonym of invisible runner

(baseball) In informal baseball and stickball games, a baserunner who cannot steal a base but can, depending on the rules, advance on a wild pitch, and who usually travels at the rate of the current batter.