Webster's Revised Unabridged Dictionary · 1913

Furfurol

Furfurol , noun

[Latin furfur bran + oleum oil.]

(Chemistry) A colorless oily liquid, C4H3O.CHO, of a pleasant odor, obtained by the distillation of bran, sugar, etc., and regarded as an aldehyde derivative of furfuran; -- called also furfural.