From Longman Dictionary of Contemporary Englishlegal tenderˌlegal ˈtender noun [uncountable] PECcoins or bank notes that people can officially use as money in a particular country
Examples from the Corpus
legal tender• His followers made it a legal tender at the stores for everything they wanted.• But they are the old-style notes without silver strips although legal tender could arouse suspicion.• It was not legal tender but traded at a free price against the rouble, and was informally linked to gold.From Longman Business Dictionarylegal tenderˌlegal ˈtender noun [uncountable]FINANCE coins and bank notes that are officially allowed to be used as money in a particular placeThese notes are no longer legal tender. 