Cancer
Webster's Dictionary [1]
(1): (n.) A genus of decapod Crustacea, including some of the most common shore crabs of Europe and North America, as the rock crab, Jonah crab, etc. See Crab.
(2): (n.) Formerly, any malignant growth, esp. one attended with great pain and ulceration, with cachexia and progressive emaciation. It was so called, perhaps, from the great veins which surround it, compared by the ancients to the claws of a crab. The term is now restricted to such a growth made up of aggregations of epithelial cells, either without support or embedded in the meshes of a trabecular framework.
(3): (n.) The fourth of the twelve signs of the zodiac. The first point is the northern limit of the sun's course in summer; hence, the sign of the summer solstice. See Tropic.
(4): (n.) A northern constellation between Gemini and Leo.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]
(the Crab) was the animal which Juno is said to have sent against Hercules, when he contended with the Hydra in the morasses of Lerna, and by which his foot was bitten. The hero, however, killed it, and Juno placed it in the zodiac.
