cos

Noun

WORDNET DICTIONARY

cos(n = noun.linkdef) cosine - ratio of the adjacent side to the hypotenuse of a right-angled triangle;

is a kind of circular function, trigonometric function

cos(n = noun.food) cos lettuce, romaine, romaine lettuce - lettuce with long dark-green leaves in a loosely packed elongated head;

is a kind of lettuce

cos, n. a variety of lettuce with crisp narrow leaves forming a long upright head.

cos, abbr. cosine.

cos, conj. & adv. (also 'cos) colloq. because.

Etymology

abbr.

Also see definition of "cos" in Bible Study Dictionaries