Definition of cup:
(n) :
a concave vessel for holding liquid, generally adorned with either a handle or a stem (confer
goblet,
glass.); a US unit of liquid measure equal to 8 fluid ounces, 1/16 of a US gallon, or 236.5882365 ml
"pour the wine into the cup."
(v) :
to form into the shape of a cup, particularly of the hands; to hold something in cupped hands
"cup your hands and I'll pour some rice into them."