noun
: any of numerous small fishes used to exterminate mosquito larvae ; especially : either of two No. American live-bearers ( Gambusia affinis and Heterandria formosa )
noun
: any of numerous small fishes used to exterminate mosquito larvae ; especially : either of two No. American live-bearers ( Gambusia affinis and Heterandria formosa )
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012