PARLEYVOO

Etymology

Noun

parleyvoo (plural parleyvoos)

The French language, especially as understood by an English person. [from 18th c.]

(now, rare) A French person. [from 18th c.]

Verb

parleyvoo (third-person singular simple present parleyvoos, present participle parleyvooing, simple past and past participle parleyvooed)

(intransitive, dated, humorous) To speak a foreign language, especially French.

Source: Wiktionary