allowance Look up allowance at Dictionary.com
late 14c., "praise" (a sense now obsolete), from O.Fr. alouance, from alouer (see allow). Sense of "a sum alloted to meet expenses" is from mid-15c. In accounts, meaning "a sum placed to one's credit" is attested from 1520s. To make allowances is lit. to add or deduct a sum from someone's account for some special circumstance. Figurative use of the phrase is attested from 1670s.