Chad (paper) device which will not punch a complete circle in the tape but, instead, will only cut approximately three-quarters of the circumference of a circle ... thereby leaving a movable, or hinged, lid of paper in the tape." In the "New Hacker's Dictionary", two unattributed and likely humorous derivations for "chad" are offered, a back-formation from a personal name "Chadless" and an acronym for "Card Hole Aggregate Debris". Other etymologies claim derivation from the Scottish name for river gravel, "chad", or the British slang for louse, "chat". When a chad is not fully detached, it is described by various terms corresponding
Black Hole (solitaire) Black Hole (solitaire) Black Hole is a solitaire card game that is akin to Golf and Tri Peaks, but its tableau is somewhat like that of La Belle Lucie. Invented by David Parlett, this game's objective is to compress the entire deck into one foundation. The cards are dealt to the tableau in piles of three. The leftover card, dealt first or last, is placed as a single foundation called the Black Hole. This card usually is the Ace of Spades, but any card can do. Only the top cards of each pile in the tableau are available for play