any of an order (Artiodactyla) of hoofed mammals having an even number of toes, including
swine, hippopotamuses, and all ruminants
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'artiodactyl'< ModL < Gr artios, even + daktylos, finger or toe