Canine
来自Big Physics
late Middle English (in canine (sense 2 of the noun)): from French, from Latin caninus, from canis ‘dog’.
wiktionary
From Latin canīnus(“of dogs, dog-like”), from canis(“dog”). Compare French canin.
etymonline
canine (n.)
late 14c., "a pointed tooth," from Latin caninus "of the dog," genitive of canis "dog" (source of Italian cane, French chien), from PIE root *kwon- "dog." The meaning "a dog" is first recorded 1869.
canine (adj.)
c. 1600, "pertaining to one of the four sharp-pointed tearing teeth between the incisors and the molars," from canine (n.) or Latin caninus. Meaning "pertaining to a dog or dogs" is from 1620s.
