vt. To abort a job on a time-sharing system. Used esp. when the person doing the deed is an operator, as in "canned from the {console}". Frequently used in an imperative sense, as in "Can that print job, the LPT just popped a sprocket!" Synonymous with gun. It is said that the ASCII character with mnemonic CAN (0011000) was used as a kill-job character on some early OSes.