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The Collaborative International Dictionary
columbin

Calumbin \Ca*lum"bin\, n. (Chem.) A bitter principle extracted as a white crystalline substance from the calumba root. [Written also colombin, and columbin]

Wiktionary
columbin

n. (context organic compound English) A white, crystalline, bitter substance.

Usage examples of "columbin".

And columbining, the poets said, means making love as the doves do, and as often.