balisong

Popularly believed to derive from the Tagalog phrase baling sungay (literally "broken horn"), since the original balisongs were made from carved animal horns.

balisong (plural balisongs)

1. A folding pocket knife with two handles counter-rotating around the tang such that, when closed, the blade is concealed within grooves in the handles.

• butterfly knife
• Batangas knife

balisóng

1. a butterfly knife