cos lettuce
noun/ˌkɒs ˈletɪs/, /ˌkɒz ˈletɪs/
/ˌkɑːs ˈletɪs/
(British English) (North American English romaine)
[countable, uncountable]- a type of lettuce with long, narrow leaves that form a tall head Word Originlate 17th cent.: named after the Aegean island of Cos, where it originated.
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cos lettuce