from
The Collaborative International Dictionary of English v.0.48
Hamadryad \Ham"a*dry`ad\ (h[a^]m"[.a]*dr[imac]`[a^]d), n.; pl.
E. {Hamadryads} (-[a^]dz), L. {Hamadryades}
(-dr[imac]"[.a]*d[=e]z). [L. Hamadryas, -adis, Gr.
"Amadrya`s; "a`ma together + dry^s oak, tree: cf. F.
hamadryade. See {Same}, and {Tree}.]
[1913 Webster]
1. (Class. Myth.) A tree nymph whose life ended with that of
the particular tree, usually an oak, which had been her
abode.
[1913 Webster]
2. (Zool.) A large venomous East Indian snake ({Ophiophagus
bungarus}), allied to the cobras.
[1913 Webster]