Daichi Is A Boys Name Of Japanese Origin. This Light And Lyrical Appellation Is Pre-ordained For Those Ready To Have A Growing Family! Though It Takes A Little Forethought, Daichi Means "first Son" And Couldnt Be Sweeter When You Think About Them Next To Their Little Sibling. In Japanese, Different Kanji Can Change The Meaning Of A Name. Depending On The Characters, Daichi May Also Mean “from The Earth,” Lending A Nature Title For Your Little Sapling. Also Carrying The Definition Of “great Wisdom,” Dont Be Surprised If You Learn A Thing Or Two From Your High-minded Tot As They Grow.