caterer

noun

1. one whose business is to provide food, supplies, and sometimes service at social gatherings.
2. one who caters.

noun

1. a person who caters, esp one who as a profession provides food for large social events, etc

n.

mid-15c., earlier simply cater (see cater (v.)). With redundant -er (cf. poulterer, sorcerer, upholsterer).