100円玉 ひゃくえんだま Also written 百円玉, 一〇〇円玉 Meanings Noun 100 yen coin Kanji 円 circle. Read as エン. 玉 ball. Read as たま. Example sentences 百円玉ではなくて、瓶の栓でした。It wasn't a 100 yen coin, it was a bottle cap. Jinuma: Japanese Dictionary · Word lists