Search gender: all male female Uinao Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: uinao Katakana: ウイナオ 0 Kanji: 初直 Meaning: 初For the first time 直Correct. Honest. Straight-hearted. fix. Direct. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Uinao Boy Name Meaning, Kanji Variations.