Folklore a fat, white-bearded, jolly old man in a red suit, who lives at the North Pole, makes toys for children, and distributes gifts at Christmastime
also called Father Christmas, Saint Nicholas, Saint Nick
See Santa Claus in American Heritage Dictionary 4
(sănˈtə klôzˌ)
noun
The personification of the spirit of Christmas, usually represented as a jolly fat old man with a white beard and a red suit, who brings gifts to good children on Christmas Eve.