There are 3 definitions of cos in English:


Syllabification: cos
Pronunciation: /käs
(also cos lettuce)


Another term for romaine.
More example sentences
  • Dill pickles, a bit of cos lettuce, slithers of Parmesan - that's all you need.
  • Tear basil, mint, coriander, parsley and cos and place in a large salad or mixing bowl.
  • The cold entrées were Smoked Chicken Caesar Salad, with cos lettuce and croutons dressed with shaved Parmesan cheese, and Avocado, Pancetta and Stilton Salad on a bed of mixed leaves with baby spinach.


late 17th century: named after the Aegean island of Cos, where it originated.

Definition of cos in:

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Word of the day dinkum
Pronunciation: ˈdiNGkəm
(of an article or person) genuine

There are 3 definitions of cos in English:


Line breaks: cos
Pronunciation: /kɒz, kəz/

Entry from British & World English dictionary

(also 'cos or coz)


British informal
Short for because.

Definition of cos in: