(graph theory) A theorem stating that given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions so that no two adjacent regions have the same color (adjacent being defined as two regions sharing a boundary, not counting corners, in which three or more regions share a boundary).

The official name of the country Colombia.

plural of color television

(military) The military officer title.

(derogatory) Rhetorical question used to imply that the party addressed is out of touch with reality

plural of skin color

Alternative spelling of eye color

The color or pigment of the iris of the eye.

The highest title of honor bestowed by the Commonwealth of Kentucky, recognizing noteworthy accomplishments and service to a community, state or a nation.

plural of colour guard