killifish
kil·li·fish
noun \ˈki-li-ˌfish\Definition of KILLIFISH
1
: any of a family (Cyprinodontidae) of numerous small oviparous fishes much used as bait and in mosquito control
2
: any of various live-bearers (family Poeciliidae)
Origin of KILLIFISH
killie killifish (perhaps from 3kill) + fish
First Known Use: 1836
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