Classical Mythology . one of a race of monsters having the head, trunk, and arms of a man, and the body and legs of a horse.

( initial capital letter ) Astronomy . the constellation Centaurus.

a skillful horseman or horsewoman.

( initial capital letter ) Rocketry . a U.S. upper stage, with a restartable liquid-propellant engine, used with an Atlas or Titan booster to launch satellites and probes.

noun

chiron , nessus