Usually used to describe a French immagrant, especially one with a thick French accent. This word is often used in a mocking tone to insult a Frenchman behind his back, but some people might even say this word right to a Frenchmans face.
To a Frenchmans face: "Oh ho! So I hear you are Fwench! I am also Fwench!"
Behind Frenchmans back: "Did you meat Zjhok yet?" "No, but it sounds Fwench."