nunchaku (nan-chakua) pronunciation or nunchuck .

A pair of hardwood sticks joined by a chain or cord and used as a weapon. Often used in the plural.

[Okinawan Japanese, probably from Chinese (Taiwanese) neng-cak, type of farm implement, equivalent to Chinese (Mandarin) lizheng, two, paired + Chinese (Mandarin) zh隆o, to dig, digger.]