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Definition of Cos lettuce
1. Noun. Lettuce with long dark-green spoon-shaped leaves. 
Exact synonyms: Lactuca Sativa Longifolia, Romaine Lettuce
Group relationships: Genus Lactuca, Lactuca
Generic synonyms: Lettuce
Group relationships: Genus Lactuca, Lactuca
Generic synonyms: Lettuce
2. Noun. Lettuce with long dark-green leaves in a loosely packed elongated head.



