From Longman Dictionary of Contemporary Englishcoscos1, 'cos, coz /kəz/ conjunction British English spoken informal BECAUSEbecause I don’t get out much now cos of the children.coscos2 noun (plural coses or cos) [countable, uncountable] British English a type of lettuce SYN romainecoscos3 /kɒz, kɒs $ kɑːs/ technical HMthe written abbreviation of cosine
