First try to establish if, in your sleep, you are really thirsty—see Drink, Water. That which is giving, that which is mysterious. But also zest for life, advances, and luxury, as in Oysters, Balloon, Champagne.
A warning sign of alcoholism. What is the goblet made of? What is in it? Possibly something poisonous? The next question would be what kind of poison.
Classical symbol in depth psychology for female sexuality.... Little Giant Encyclopedia