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Related to cos lettuces: butterhead lettuce
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  • noun

Synonyms for cos

ratio of the adjacent side to the hypotenuse of a right-angled triangle

lettuce with long dark-green leaves in a loosely packed elongated head

References in periodicals archive ?
To make enough salad for four you will need 600g (1lb 4oz) of trimmed lamb fillets, 2 tbsp olive oil, 2 tsp of finely grated lemon rind, 1 tsp of finely chopped fresh marjoram, 1 clove of garlic crushed, 1 large green pepper thinly sliced, 400g (1lb) of diced cucumber, 400g (1lb) of halved cherry tomatoes, 2 celery stalks thinly sliced, 4 spring onions thinly sliced, 2 baby cos lettuces coarsely chopped, 150g (6oz) of stoned kalamanta olives, 200g (8oz) of crumbled feta cheese, and black pepper to season.
He didn't seem surprised when I raised an eyebrow at the mention of his two dozen fresh fig breakfast, or Rozalind's nine banana smoothie breakfast or her supper of three Cos lettuces sprinkled with 20 tomatoes.
Narrow, upright, cos lettuces take up less space than cabbage lettuces and tend to be crisper, while rocket needs to be eaten young otherwise it becomes coarse.