hygrine

from The Century Dictionary.

• noun A liquid and volatile alkaloid obtained from coca-leaves. It forms crystallizable salts with acids.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) An alkaloid associated with cocaine in coca leaves (Erythroxylon coca), and extracted as a thick, yellow oil, having a pungent taste and odor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry A pyrrolidine alkaloid found mainly in coca leaves, extracted as a pungent yellow oil.