allowance - noun

an amount allowed or granted (as during a given period)

a sum granted as reimbursement for expenses

an amount added or deducted on the basis of qualifying circumstances

a permissible difference; allowing some freedom to move within limits

a reserve fund created by a charge against profits in order to provide for changes in the value of a company's assets

the act of allowing

allowance - verb

• put on a fixed allowance, as of food

allowance - thesaurus

adjustment   leeway   margin   tolerance