TREFA Meaning of TREFA in English [ 'treɪfə ](also trifa or trayf ) ■ adjective (of food) not satisfying the requirements of Jewish law.OriginC19: from Heb. ṭĕrēp̱āh 'the flesh of an animal torn or mauled'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004