Webster's Revised Unabridged Dictionary · 1913

Libation

Libation (li*bā"shun) , noun

[Latin libatio, from libare to take a little from anything, to taste, to pour out as an offering: compare French libation.]

The act of pouring a liquid or liquor, usually wine, either on the ground or on a victim in sacrifice, in honor of some deity; also, the wine or liquid thus poured out. — Dryden
A heathen sacrifice or libation to the earth. — Bacon