Search gender: all male female Yuien Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: yuien Katakana: ユイエン 0 Kanji: 唯円 Meaning: 唯That's it. Just one. Only. A word expressing limitation or emphasis. Reply. A reply of acceptance that is answered immediately. 円A round shape. No corners or chips. Smooth. A metaphor for something that is full. Japanese monetary currency. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Yuien Boy Name Meaning, Kanji Variations.