Police is a much better word for this, IMHO. :) To spell it out, it's an adjective (e.g police car) verb (e.g. police the streets) and obviously a noun. Buffalo has never struck me as a very good verb...
I've always preferred the publican's complaint - "This sign is painted wrong, you missed the spaces between Dog and and, and and and Duck" - because it doesn't rely on unmarked compounds like police-police or Buffalo-buffalo no-one uses outside linguistic puzzles :)
“Police police” (as well as extensions) is reasonable enough:
“Internal Affairs is like the police police.”
“So are their supervisors like, the police police police?”
Perhaps if you were from Buffalo where the Buffalo buffalo buffalo Buffalo buffalo you'd be more receptive to the idea.
Edit: A buffalo is a member of a number of species of large antelope, to buffalo is to either act as a buffalo or hunt buffalo, and Buffalo is any of several places where there used to be a lot of buffalo before people buffaloed them to near extinction.
On the other hand, there's a town in Poland called Police...
It can also be to impress or intimidate by a display of power, importance, or authority.
It doesn't seem to mean hunting or acting as a buffalo. I can't find those in any dictionary.
Have you seen a bison? Their display of power is quite intimidating.
According to [0], it can mean to hunt buffalo.
"An antelope is a member of a number of even-toed ungulate species indigenous to various regions in Africa and Eurasia. Antelopes comprise a wastebasket taxon (miscellaneous group) within the family Bovidae, encompassing those Old World species that are not cattle, sheep, buffalo, bison, or goats."
- they're defined by where they're from and what they aren't. There are 91 species. So, for example, a gnu (wildebeest) is an antelope.
I am aware that the bison is not even a buffalo. But then again, it is, isn't it? That that is, is. That that is not, is not. Is that it? It is.
"alarm, overawe," 1900, from buffalo (n.). Probably from the animals' tendency to mass panic. Related: Buffaloed; buffaloing.
Buffalo
city in western New York state, U.S., of disputed origin (there never were bison thereabouts), perhaps from the name of a native chief, or a corruption of French beau fleuve "beautiful river."
Nouns, verb, and adjective all different.