Webster’s Revised Unabridged Dictionary · 1913
Hamadryad
Ham′a·dry′ad (hăm′ȧ·drī′ăd), n.; pl. E. Hamadryads (- ădz), L. Hamadryades (- drī′ȧ·dēz). [L. Hamadryas, -adis, Gr. Ἁμαδρυάς; ἅμα together + δρῦς oak, tree: cf. F. hamadryade. See Same, and Tree.]
1. (Class. Myth.) A tree nymph whose life ended with that of the particular tree, usually an oak, which had been her abode.
2. (Zoöl.) A large venomous East Indian snake (Ophiophagus bungarus), allied to the cobras.