(regional, slang) A flatfish. / (Australia, slang) A flathead (fish). / (slang) A flat tire/tyre. / (archaic, US, slang) A policeman. / (slang) A flathead V8 engine.

plural of flatty. / plural of flattie. / (slang) Flat shoes.

Alternative form of flatty / (informal) A flat white (type of coffee). / (South Africa) A flat marinated cut of meat. / (slang) A flat store. / A flat-bottomed sloop-rigged sharpie. / A flattie spider.

plural of flatty-ken

(UK, thieves' cant, obsolete) A public house whose landlord is ignorant of the practices of the thieves and tramps who frequent it.

Any of the wall crab spiders, which constitute family Selenopidae.

plural of flattie spider