Santa (n.1)

1893 as a shortened form of Santa Claus.

santa (n.2)

the Spanish title for a female saint, feminine singular of san, from Latin sanctus (see saint (n.)). As in Santa Lucia, Santa Maria, and in many toponyms in the U.S. West, such as Santa Ana ("Saint Anne"), the California mountain range, also extended to the hot, strong, dry wind that blows from it.

Definitions of Santa

Santa (n.)
the legendary patron saint of children; an imaginary being who is thought to bring presents to children at Christmas;
Synonyms: Santa Claus / Kriss Kringle / Father Christmas / Saint Nicholas / Saint Nick / St. Nick