bolas
/ˈbəʊləs/noun
treated as sing. or pl.
- (especially in South America) a missile consisting of a number of balls connected by strong cord, which when thrown entangles the limbs of the quarry（尤指南非的）流星锤（一种投射物, 用绳索系住若干球体, 投出后可缠住猎物的肢体）。
词源
early 19th cent.: from Spanish and Portuguese, plural of bola 'ball'.