Definition from Wiktionary, the free dictionary
- (US, regional) A variant of Finnish language that is spoken by the descendants of Finnish immigrants to North America, the vocabulary of which is heavily influenced by English. It is far from being a uniform language, mainly exists in spoken form, and seems bound to disappear.
- (derogative) A way of speaking Finnish using English-language terminology excessively. It is particularly common among those professions which are in close contact with the English-speaking world such as IT-professionals, marketing people and managers of global firms.
- (derogative) English spoken with a heavy Finnish accent and using Finnish linguistic structures.
- A Wikimirror article on Finglish 
- My Father Spoke Finglish at Work: Finnish Americans in Northeast Ohio; a book by Noreen Sippola Fairburn, Kent State University Press (June 30, 2007), language: English, ISBN-13: 978-0873389099.
- Finglish, an article by Robert W. Hellstrom in the journal American Speech, Vol. 51, No. 1/2 (Spring - Summer, 1976), pp. 85-93 doi:10.2307/455358