The Collaborative International Dictionary of English v.0.48:
Peregrine \Per"e*grine\ (p[e^]r"[-e]*gr[i^]n; 277), a. [L.
peregrinus. See Pilgrim.]
Foreign; not native; extrinsic or from without; exotic.
[Spelt also pelegrine.] "Peregrine and preternatural heat."
Peregrine falcon (Zool.), a courageous and swift falcon
(Falco peregrinus), remarkable for its wide distribution
over all the continents. The adult plumage is dark bluish
ash on the back, nearly black on the head and cheeks,
white beneath, barred with black below the throat. Called
also peregrine hawk, duck hawk, game hawk, and