Wikipedia
Panabas
The Panabas is a large, forward-curved sword or battle axe used by certain ethnic groups in the southern Philippines. It can range in size from 2 to 4 feet and can be held with one or both hands, delivering a deep, meat cleaver-like cut. In its heyday, it was used as a combat weapon, as an execution tool, and as a display of power. Occasional use as an agricultural and butchering tool has also been noted.
The sword's name is a shortening of the word "pang-tabas", which means "chopping tool". As such, its etymological origins are the root word tabas ("to chop off") and the prefix pang ("used for").