Search gender: all male female 雷龍 Japanese Boy Names Variations. 1 names found. gender: all male female Name: rairyu Katakana: ライリュウ 3 Kanji: 雷龍 Meaning: 雷Thunder. Something that is known to the world. A weapon of great explosive power. 龍Dragon. An imaginary animal. An outstanding person. A hero. A parable of the Son of Heaven. A word used for things related to the Son of Heaven. Dinosaurs. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 雷龍 Japanese Boy Names Variations.