Search gender: all male female Rumoi Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: rumoi Katakana: ルモイ 0 Kanji: 留萌 Meaning: 留Stays. To hold in place. To be still and unmoving. 萌Budding. The buds of plants and trees appear. Things begin to happen. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Rumoi Boy Name Meaning, Kanji Variations.