Real Dictionary

valet
countable noun: A valet is a male servant who looks after his employer by doing things such as caring for his clothes and cooking for him.
verb: If someone valets a vehicle, they are paid to clean it thoroughly inside and out.

valet in American English
a man's personal manservant who takes care of the man's clothes, helps him in dressing, etc.
referring to any of various services, as one in a hotel for cleaning and pressing clothes
to serve (a person) as a valet
to serve as a valet
noun: a male servant who attends to the personal needs of his employer, as by taking care of clothing or the like; manservant

valet in British English
noun: a manservant who acts as personal attendant to his employer, looking after his clothing, serving his meals, etc
verb: to act as a valet for (a person)