Noun
(carpentry) 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).
(dialectal, Britain) A mattock with one blade like an axe and the other like an adze.
(dialectal, England) A reaping hook, especially for cutting beans and peas.
(obsolete) A double-bladed halberd or battle-axe.
Source: en.wiktionary.org