cos cos /ˈkɔs/

conjunction

1. () [Informal, British] For the reason that; on account of  ( cuz [Informal, Non-standard] , cos [Informal, British] , coz [Informal, British] , as , because , for , since )
   for the reason that; on account of
   

noun

1. Lettuce with long dark-green leaves in a loosely packed elongated head  ( cos , cos lettuce , romaine , romaine lettuce )
   lettuce with long dark-green leaves in a loosely packed elongated head
   
   
2. Ratio of the adjacent side to the hypotenuse of a right-angled triangle  ( cos , cosine )
   ratio of the adjacent side to the hypotenuse of a right-angled triangle
   

 CO CO /ˈkoʊ/

noun

1. A state in west central United States in the Rocky Mountains  ( Centennial State , CO , Colo. , Colorado )
   a state in west central United States in the Rocky Mountains
   
2. One who refuses to serve in the armed forces on grounds of conscience  ( CO , conchie [Informal, UK] , conchy [Informal, UK] , conscientious objector )
   one who refuses to serve in the armed forces on grounds of conscience
     John refused to serve in the military due to his conscientious objector status.
   John refused to serve in the military due to his conscientious objector status.
   

 Co

1. A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition  ( atomic number 27 , Co , cobalt )
   a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
   
   

 CO

1. An odorless very poisonous gas that is a product of incomplete combustion of carbon  ( carbon monoxide , carbon monoxide gas , CO )
   an odorless very poisonous gas that is a product of incomplete combustion of carbon