cornin

from The Century Dictionary.

• noun A bitter crystalline principle discovered in the bark of Cornus florida. Also called cornic acid.

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

• noun A bitter principle obtained from dogwood (Cornus florida), as a white crystalline substance; -- called also cornic acid.
• noun An extract from dogwood used as a febrifuge.

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

• noun organic chemistry A bitter principle obtained from dogwood (Cornus florida), as a white crystalline substance; cornic acid.
• noun An extract from dogwood used as a febrifuge.