Canis Major Definition

kānĭs, kănĭs

noun

A S constellation between Monoceros and Columba, containing the bright star Sirius; the Greater Dog.

Webster's New World

Synonyms:

pronoun

(astronomy) A winter constellation of the northern sky, said to resemble a dog following the hunter Orion. It includes the brightest star in the night sky Sirius, which is appropriately known as the Dog Star.

Wiktionary

Origin of Canis Major

Latin Canis Māior canis dog māior larger

From American Heritage Dictionary of the English Language, 5th Edition
From Latin canis maior (“(the) greater dog”).

From Wiktionary