Definition of decorates:
(v) :
(ambitransitive) To improve the appearance of an interior of, as a house, room, or office.
(v) :
(transitive) To furnish with decorations.
(v) :
(transitive) To honor by providing a medal, ribbon, or other adornment.
(v) :
(programming, transitive) To extend a method, etc. by attaching some further code item.
(v) :
(By putting paint or wallpaper on the walls.)
(v) :
(By adding adornments to the interior space.)