海马回 Traditional form: 海馬迴 Pinyin (reading): hǎimǎhuí Definitions: hippocampus Characters: 海 - sea, ocean; maritime 马 - horse; surname 回 - to return, to turn around; a time Traditional characters: 海 - sea, ocean; maritime 馬 - horse; surname 迴 - to rotate, to revolve; curve, zig-zag