The Collaborative International Dictionary
Foreignism
Foreignism \For"eign*ism\, n. Anything peculiar to a foreign language or people; a foreign idiom or custom.
It is a pity to see the technicalities of the so-called
liberal professions distigured by foreignisms.
--Fitzed.
Hall.
Wiktionary
foreignism
n. A trait, custom, phrase or characteristic typical of a foreign country or language.