Search gender: all male female Seiba Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: seiba Katakana: セイバ 0 Kanji: 誠羽 Meaning: 誠True. A heart without lies and falsehoods. Sincerity. Truly. 羽Feathers. Insect wings. Wings. A word for counting birds and rabbits. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Seiba Name Meaning, Kanji Variations.