a pad or tablet of invoices, bills, blank sheets, etc., interleaved with carbon paper for making a copy or copies of the writing or typing on the uppermost leaf
adjective
2. (of a pad or tablet of invoices, bills, blank sheets, etc.)
made up in such a form
3.
pertaining to continuous-form paper, folded like a fan or accordion so that it will stack
Word origin
[1940–45; fan1 + fold1]This word is first recorded in the period 1940–45. Other words that entered Englishat around the same time include: airlift, black box, sealant, silkscreen, whiteout