Definition of


  1. (noun, act) a method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis
  2. (noun, animal) feline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats
  3. (noun, animal) any of several large cats typically able to roar and living in the wild
  4. (noun, artifact) a large tracked vehicle that is propelled by two endless metal belts; frequently used for moving earth in construction and farm work
  5. (noun, artifact) a whip with nine knotted cords
  6. (noun, artifact) the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant
  7. (noun, person) a spiteful woman gossip
  8. (noun, person) an informal term for a youth or man
    the guy's only doing it for some doll
  9. (verb, body) eject the contents of the stomach through the mouth
    He purged continuously
    The patient regurgitated the food we gave him last night
  10. (verb, contact) beat with a cat-o'-nine-tails

via WordNet, Princeton University

Origin of the word Cat

  1. O.E. (c.700), from W.Gmc. (c.400-450), from P.Gmc. *kattuz, from L.L. cattus. The near-universal European word now, it appeared in Europe as L. catta (Martial, c.75 C.E.), Byzantine Gk. katta (c.350) and was in general use on the continent by c. 700, replacing L. feles. Probably ult. Afro-Asiatic (cf. Nubian kadis, Berber kadiskamore
  2. 1975, medical acronym for computerized axial tomography or something like it. more

via Online Etymology Dictionary, ©2001 Douglas Harper

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