(countable) A valet is a male servant who performs personal services for his master such as helping to dress him, sewing on buttons, polishing shoes, or maintaining his clothing.
The Prince of Wales has a valet, who looks after his clothes.
(countable) An employee of a hotel, restaurant, country club, resort, inn, or other public or private facility who performs personal services for guests or members such as shining their shoes, simple ironing, parking or retrieving their automobile.
The parking valet brought our car to the front door.
(countable) A device such as a rack or a tray that holds a man's jacket, watch, or other personal items.
He put his watch, ring, and stick pin in the valet on top of the dresser.