Definition of "Groom" :
noun: a man who has recently been married
noun: a man participant in his own marriage ceremony
noun: someone employed in a stable to take care of the horses
verb: care for one's external appearance
"He is always well-groomed."
verb: give a neat appearance to
"Groom the dogs."
verb: educate for a future role or function
"He is grooming his son to become his successor."