noun.
In Greek myth, a wood-nymph believed to live and die with the tree to which she was attached.
noun.
In entomology: A dryad or wood-nymph, a butterfly of the old genus Hamadryas.
noun.
plural A group of lepidopterous insects.
noun.
In herpetology, a large, hooded, venomous Indian serpent, Naja hamadryas or Hamadryas elaps, now Ophiophagus elaps. It is related to the cobra.
noun.
In mammalogy, a large Abyssinian baboon, Cynocephalus hamadryas, with long mane and whiskers and tufted tail. Also called hebe.