пиндос = "f*cking Yank"
Пиндостан = "Yankistan" or "Gringoland" or "AmeriKKKa"
пиндостанец = то же, как "пиндос"
Orginally, пиндос was a somewhat rude term for a person of Greek ethnicity living near the Black Sea coast of Russia -- meaning something like "greasy Greeky." And it derives from a Greek word that simply meant "an inhabitant of the region near the Pindus mountains in northwest Greece." During the Kosovo war in the 1990s, Russian soldiers began using the term пиндос for U.S. soldiers, and then it came to be a rude word for Americans in general. No one knows why Russian soldiers decided to apply this word to Americans, but one theory is that it was a "phonetic euphemism" for пидор -- which means "faggot" or "cocksucker" both in the literal sense of "a homosexual man" and in the figurative sense of "a worthless asshole who rides a loud, annoying Harley" (© South Park). So if this theory is true, then it's like the Russians were calling the Americans "cocksuckers," only they changed it to "cork-soakers" so that Americans who understood a bit of Russian wouldn't know what the Russians meant.
In short, you should be careful about using the word "пиндос" because it's considered rude, but as an American, I find it rather funny and charming!
P.S. As the Black Eyed Peas sang in "Pump It":
Niggaz wanna hate on us?
Niggaz be envious!
I know why they hatin' on us --
'Cause our style's so fabulous!