From Longman Dictionary of Contemporary Englishheadedhead‧ed /ˈhedɪd/ adjective1 →red-headed/curly-headed etc2 →two-headed/three-headed etc3 →headed notepaper/paperExamples from the Corpusheaded• Even if, in this instance, the mistakeappears on the committee's headednotepaper.• On Gordon's desk was a pile of headed notepaper.From Longman Business Dictionaryheadedhead‧ed /ˈhedɪd/ adjectiveheaded notepaper/paperpaper for writing letters that has your name and address, or that of your company, at the topAll letters to clients must be printed on headed paper.