[ 'pɛrɪgrɪn ]
■ noun a powerful falcon that breeds chiefly on mountains and coastal cliffs. [ Falco peregrinus .]
■ adjective archaic foreign.
Origin
ME: from L. peregrinus 'foreign'; the noun is a translation of the mod. L. taxonomic name, lit. 'pilgrim falcon', because falconers' birds were caught full-grown on migration, not taken from the nest.