Search gender: all male female Ikkai Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: ikkai Katakana: イッカイ 1 Kanji: 一懐 Meaning: 一One. The first. Kanji for the number 1 (one). To be the most superior. To begin, to put things together. 懐Nostalgic You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Ikkai Boy Name Meaning, Kanji Variations.