ˈ ̷ ̷ˌ ̷ ̷(ˌ) ̷ ̷ noun
Etymology: top (I) + minnow; from its swimming on the surface of the water
1. : any of numerous small viviparous surface-feeding fishes that constitute the family Poeciliidae and include many brilliantly colored freshwater fishes some of which are much used in mosquito control and others extensively kept in the tropical aquarium — compare gambusia , helleri , platy , swordtail
2. : killifish 1