Astronomy, a denomination given by the Greeks to ursa minor, "the little bear," by which sailors steer their course. The word is formed of κυνος, q.d., the dog's tail. This is the constellation next our pole, consisting of seven stars; four whereof are disposed like the four wheels of a chariot, and three lengthwise representing the beam; whence some give it the name of the chariot, or Charles's chain.

Cynosura, Cynosure, or Cynosurus, in Ancient Geography, a place in Laconia; but whether maritime or inland, uncertain. Here Æsculapius, being thunderstruck, was buried (Cicero).

Cynosura was also the name of the promontory of Marathon in Attica, opposite to Euboea.

Mythology, a nymph of Ida in Crete. She nursed Jupiter, who changed her into a star which bears the same name. It is the same as the ursa minor.