百円玉 ひゃくえんだま noun 100-yen coin 1. 100-yen coin The silver-colored coin worth 100 yen, one of the most commonly used coins in everyday transactions. 百円玉(ひゃくえんだま)を入(い)れる。🔊 to insert a 100-yen coin 自動販売機(じどうはんばいき)に百円玉(ひゃくえんだま)を二枚(にまい)入(い)れた。🔊 I put two 100-yen coins into the vending machine. 財布(さいふ)の中(なか)は百円玉(ひゃくえんだま)ばかりで重(おも)かった。🔊 My wallet was heavy because it was full of 100-yen coins. Compound of 百円(ひゃくえん) (100 yen) + 玉(だま) (ball, coin). The suffix 玉(だま) forms the names of coins, as in 五百円玉(ごひゃくえんだま) (500-yen coin) and 十円玉(じゅうえんだま) (10-yen coin).Common collocations百円玉(ひゃくえんだま)を入(い)れる: to insert a 100-yen coin百円玉(ひゃくえんだま)一枚(いちまい): one 100-yen coin百円玉(ひゃくえんだま)で払(はら)う: to pay with 100-yen coins general Added 2026.5.26 13:08 · Revised 2026.9.2 13:02 28000/28167_hyakuendama