ミズスマシ

Also written みずすまし, 水澄まし, 水澄し, 水澄, 水すまし

Meanings

1. Noun whirligig beetle (any insect of family Gyrinidae, esp. the Japanese whirligig beetle, Gyrinus japonicus)
2. pond skater; water strider See also: あめんぼ.

Jinuma: Japanese Dictionary · Word lists