NATURAL SHAPE • DICCIONARIO INGLES.COM • Definition of Natural shape

... natives on horseback passed our camp on a hunting excurtion; they were armed with bows and arrows and had decoys for the deer these are the skins of the heads and upper portions of the necks of the deer extended in their natural shape by means of a fraim of little sticks placed within. the hunter when he sees a deer conceals himself and with his hand gives to the decoy the action of a deer at feed; and thus induces the deer within arrowshot; in this mode the indians hunt on foot in the woodlands where they cannot ...

— The Journals of Lewis and Clark • Meriwether Lewis et al