Also known as: 嘴付き鉈, hashinata, 嘴鉈
A usually double-handed striking tool with a sharp rectangular blade used to cut and split wood. It looks like an oversized cleaver with a blunt or pointed nose.
It also is an archetypical Yandere weapon. Ryuuguu Rena in Higurashi No Naku Koro Ni has one of those.
Not to be confused with a Billhook.