from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Scraps or bits of paper, such as the perforated edges of paper for tractor feed printers or the tiny rectangles punched out from data cards.
- n. One of these scraps or bits of paper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Small pieces of paper punched out from the edges of continuous stationery, punched cards, paper tape etc.
- n. One of these pieces of paper.
from the GNU version of the Collaborative International Dictionary of English
- n. See shad.
from The Century Dictionary and Cyclopedia
- n. An obsolete form of shad. The name in Cornwall, England, of the young of the common sea-bream, Pagellus centrodontus.
- n. A dry twig: same as chat.
- n. Dry, bushy fragments found among food. [Prov. Eng. in both senses, usually in plural.]
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a lake in north central Africa; fed by the Shari river
- n. a family of Afroasiatic tonal languages (mostly two tones) spoken in the regions west and south of Lake Chad in north central Africa
- n. a small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape
- n. a landlocked desert republic in north-central Africa; was under French control until 1960
Origin unknown.(American Heritage® Dictionary of the English Language, Fourth Edition)
Uncertain; predates the Chadless punch (see the Snopes article on this supposed origin); possibly from Scots chad, "river gravel", or the English slang term chat, "louse". (Wiktionary)