I've heard the part of the extractor that lifts the cartridge refered to as the "head." Logically, the muzzle-facing end of the extractor stem might well be called the "toe."

gunman, what do you call the "head" of the extractor? And, the other end of the "stem?" Ummm, better question - - - what do you call the various areas of the extractor?

DDA