~ 1 [ kɒs ]
■ noun Brit. a variety of lettuce with crisp narrow leaves that form a tall head.
Origin
C17: named after the Aegean island of Kos , where it originated.
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~ 2 [ kɒz , kɒs ]
■ abbreviation ~ine.
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~ 3 [ kɒz , kəz ]
(also '~ or coz )
■ conjunction Brit. informal because.