BLANK, a word used in various senses based on that of "left white," i.e., requiring something to be filled in (Fr. blanc, white) ; thus a "blank cheque" requires the amount to be inserted, an insurance policy in blank lacks the name of the beneficiary, "blank verse" (q.v.) is unrhymed verse, a "blank cartridge" con tains only powder and no ball or shot. The word is also used for a ticket in a lottery or sweepstake which does not carry a number or the name of a horse running, or for an unstamped metal disc in coining.