The Collaborative International Dictionary of English v.0.48:
AEsculin \[AE]s"cu*lin\, n. Same as Esculin. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Esculin \Es*cu"lin\, n. [See Esculic.] (Chem.) A glucoside obtained from the [AE]sculus hippocastanum, or horse-chestnut, and characterized by its fine blue fluorescent solutions. [Written also [ae]sculin.] [1913 Webster]