n A domesticated subspecies, Felis silvestris catus, of feline animal, commonly kept as a house pet. (defdate|from 8th c.)
n (slang) Any of a variety of earth-moving machines. (from their manufacturer w:Caterpillar Inc.|Caterpillar Inc.)
n (computing) A ‘catenate’ program and command in Unix that reads one or more files and directs their content to an output device.
v (computing|_|slang) To dump large amounts of data on (an unprepared target) usually with no intention of browsing it carefully.