twibill

twibill

(ˈtwaɪˌbɪl) or

twibil

n1. (Tools) a mattock with a blade shaped like an adze at one end and like an axe at the other2. (Arms & Armour (excluding Firearms)) archaic a double-bladed battle-axe[Old English, from twi- two, double + bill sword, bill3]