hippomane

from The Century Dictionary.

• noun A substance obtained from a mare or foal, used anciently as a philter or love-charm; hence, a love-potion; a philter or charm. Also hippomanes.
• noun 2 (hi-pom′ a-nē). [capitalized] [NL.] A genus of plants of the natural order Euphorbiaceœ, characterized by having small inconspicuous flowers of separate sexes, borne on long slender spikes.