Wiktionary
threepronged
a. (context rare English) Having three prongs or similar parts. alt. (context rare English) Having three prongs or similar parts.
Usage examples of "threepronged".
So he donned a shirt sewn with bronze scales, like mine, took up a leathern shield and a threepronged spear, like mine, and paddled a little skin boat down the Green Fork.
The house was quiet around us, and full of shadows, the hallway lighted only by a threepronged candlestick set on the table.
His equipment for accomplishing that task was a threepronged claw—the thumb and the first and second fingers of his left hand.