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English definition of “cos lettuce”

cos lettuce

noun [C or U]     /ˌkɒsˈlet.ɪs/ US  /ˌkɑːsˈlet̬-/ (US romaine) UK
a type of lettuce (= green salad vegetable ) with long , narrow leaves
(Definition of cos lettuce noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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