極楽蝶 ごくらくちょう Also written ゴクラクチョウ Meanings Noun swallowtail butterfly (esp. the citrus swallowtail butterfly, Papilio xuthus) See also: 揚羽蝶 (アゲハチョウ). Kanji 極 extreme. Read as ゴク. 楽 ease. Read as ラク. 蝶 butterfly. Read as チョウ. Jinuma: Japanese Dictionary · Word lists