'Drink offering' in the Bible

I brought them to the land that I had promised to give them. But whenever they saw any high hill and or any leafy tree, they slaughtered their sacrifices there and presented their offerings that provoked my anger. There they presented their pleasing aromas and poured out their drink offering.

And it shall be the prince's part to supply the burnt-offerings, and the oblation, and the drink-offering, at the feasts, and at the new moons, and on the sabbaths, in all the solemnities of the house of Israel: it is he that shall prepare the sin-offering, and the oblation, and the burnt-offering, and the peace-offerings, to make atonement for the house of Israel.