With preceding adjective. A horse, rider, vehicle, etc., which moves or proceeds in the manner or at the speed specified. Also simply: a horse…

(a) a person, animal, etc., that moves or works quickly; (b) a person who lives in an extravagant, unconventional, or dissipated manner (now rare).

Designating imaginary or hypothetical footwear that enables the wearer to travel an extremely long distance very rapidly and unimpeded by any…

One who or that which moves with exceptional speed, e.g. a fish, horse, ship, etc.

In other extended uses: anything likened to a racehorse, typically in being lean, sleek, or swift.

colloquial. A person who or thing which travels at great speed; (Cricket) a fast bowler (cf. medium-pacer n. at medium, n. adj.compounds 2).

Something which moves rapidly.

U.S. Horse Racing. A horse that is entered in a race to improve the performance of another horse from the same stable, either by setting the pace…

something so sharply drawn or so swift as to suggest the notion of splitting the wind; cf. wind-cutter, n.

More generally, a person who moves or acts very quickly, a fast runner. Also applied to animals.

A fast-moving person: a rapid runner, a quick thinker. Also ironically. colloquial.

A person who or thing that moves particularly quickly.