Webster's Revised Unabridged Dictionary · 1913

Pickax

Pickax (pik"aks`) , noun

[A corruption of Old English pikois, pikeis, French picois, from pic. See Pick, n.]

A pick with a point at one end, a transverse edge or blade at the other, and a handle inserted at the middle; a hammer with a flattened end for driving wedges and a pointed end for piercing as it strikes. — Shakespeare

Also: Pickaxe