ALLIGATOR, n. The crocodile of America, superior in every detail to
the crocodile of the effete monarchies of the Old World. Herodotus
says the Indus is, with one exception, the only river that produces
crocodiles, but they appear to have gone West and grown up with the
other rivers. From the notches on his back the alligator is called a
sawrian.
-- Ambrose Bierce, "The Devil's Dictionary"