What is "pharaoh's rat"

Pharaoh \Pha"raoh\, n. [Heb. par[=o]h; of Egyptian origin: cf. L. pharao, Gr. ?. Cf. Faro.]

1. A title by which the sovereigns of ancient Egypt were designated.

2. See Faro.

   Pharaoh's chicken (Zo["o]l.), the gier-eagle, or Egyptian vulture; -- so called because often sculpured on Egyptian monuments. It is nearly white in color.

   Pharaoh's rat (Zo["o]l.), the common ichneumon.