ericolin

from The Century Dictionary.

• noun A very bitter, brown, resinous compound, C₃₄H₅₆O₂₁, found in several plants of the heath family, in Arctostaphylos Uvaursi, and in Ledum palustre.

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

• noun (Chem.) A glucoside found in the bearberry (and others of the Ericaceæ), and extracted as a bitter, yellow, amorphous mass.

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

• noun organic chemistry A glucoside found in the bearberry (and other ericaceous plants).