WordNet sense 1 (an informal term for a youth or man):

bozo, guy, hombre

WordNet sense 2 (the leaves of the shrub Catha edulis which are chewed like tobacco or used to make tea; has the effect of a euphoric stimulant):

kat, khat, qat, quat, African tea, Arabian tea

WordNet sense 3 (a whip with nine knotted cords):

cat-o'-nine-tails

WordNet sense 4 (a large tracked vehicle that is propelled by two endless metal belts; frequently used for moving earth in construction and farm work):

caterpillar

WordNet sense 5 (any of several large cats typically able to roar and living in the wild):

big cat

WordNet sense 6 (feline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats):

true cat

WordNet sense 7 (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):

CT, computerized tomography, computed axial tomography, computed tomography, computerized axial tomography

WordNet sense 8 (eject the contents of the stomach through the mouth):

barf, cast, chuck, disgorge, honk, puke, purge, regurgitate, retch, sick, spew, upchuck, vomit, regorge, spue, be sick, throw up, vomit up