twibill

A two-edged tool used in gate-type hurdle-making for cutting out mortises, with a flat chisel and a mortise chisel or hook, similar to the much larger French carpenter's tool, the besaiguë (or bisaiguë).

A mattock with one blade like an axe and the other like an adze.

A reaping hook, especially for cutting beans and peas.

A double-bladed halberd or battle-axe.

[A] little fair-haired man, as broad as he was tall, who heaved up a long “twybill,” or double axe.