オニヤンマおにやんまFreq.FrequencyTop 100,000Meanings1nounSiebold's dragonfly; jumbo dragonflyusually written using kana aloneA large, striking dragonfly native to Japan and East Asia. Often seen near streams and rivers in summer.夏なつになると、川かわの近ちかくでオニヤンマをよく見