[IRC] n. Short for nickname. On IRC, every user must pick a nick, which is sometimes the same as the user's real name or login name, but is often more fanciful. nickle /ni'kl/ [from `nickel', common name for the U.S. 5-cent coin] n. A nybble + 1; 5 bits. Reported among developers for Mattel's GI 1600 (the Intellivision games processor), a chip with 16-bit-wide RAM but 10-bit-wide ROM. See also deckle.