|Noun||1.||chad - a small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape|
|2.||Chad - a lake in north central Africa; fed by the Shari river|
Synonyms: Lake Chad
|3.||Chad - a landlocked desert republic in north-central Africa; was under French control until 1960|
|4.||Chad - a family of Afroasiatic tonal languages (mostly two tones) spoken in the regions west and south of Lake Chad in north central Africa|
|(jargon, printer)||chad - /chad/ (Or "selvage" /sel'v*j/ (sewing and
weaving), "perf", "perfory", "snaf"). 1. The perforated
edge strips on paper for sprocket feed printers, after they
have been separated from the printed portion.|
The term perf may also refer to the perforations themselves, rather than the chad they produce when torn.
2. (Or "chaff", "computer confetti", "keypunch droppings") The confetti-like bits punched out of punched cards or paper tape which collected in the chad box.
One of the Jargon File's correspondents believed that "chad" derived from the chadless keypunch.