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colostrum the yellowish milk secreted by a female mammal in the first few days after the birth of young, that is esp. rich in immune factors and protein.
colour a spelling of color used in Canada and Britain. See color for more information.
colt a young male horse, esp. one younger than four years old. [2 definitions]
colter the blade or wheel on the front of a plowshare that cuts a line in the sod.
coltish having a playful nature; lively or frolicsome, like a colt.
coltsfoot a widespread perennial weed, named for the shape of its leaves.
Columbia a river that flows from British Columbia, along the Washington-Oregon border, and into the Pacific. [2 definitions]
columbine any of several plants related to the buttercup, bearing varicolored flowers having five spurred petals.
columbium see niobium.
Columbus the capital of Ohio.
Columbus Day a U.S. holiday, usu. observed on the second Monday in October, that commemorates Christopher Columbus's discovery of the New World.
column a regularly appearing article or editorial in a newspaper or magazine. [5 definitions]
columniation the architectural use of columns, or an arrangement of columns in a structure.
columnist a writer or editor of a regular column or feature in a newspaper or magazine.
colure either of the two great circles of the celestial sphere that intersect at the poles, one passing through the solstices and the other through the equinoxes.
colza any of several plants, esp. rape, whose seeds produce oil used in salad dressings and lubricants. [2 definitions]
com- with; together; jointly. [2 definitions]
coma1 a prolonged, deep state of unconsciousness resulting from disease, injury, poisoning, or the like.
coma2 the cloud around a comet's nucleus; the head of a comet. [3 definitions]
comal in botany, of or pertaining to terminal tufts, such as the silky hairs at the ends of some seeds or the bracts at the top of a pineapple.
comanage combined form of manage.