Fraxin :: Fraxin (n.) A colorless crystalline substance, regarded as a glucoside, and found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It shows a delicate fluorescence in alkaline solutions; -- called also paviin..

Fraxinus :: Fraxinus (n.) A genus of deciduous forest trees, found in the north temperate zone, and including the true ash trees..

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