海马回 hǎimǎhuí hippocampus Origin Definitions Defs Strokes Stroke Words Sentences Sents 海马 海馬 hǎimǎ hippocampus A part of the brain involved in memory and navigation; often used as an abbreviation for 海马体 hǎimǎtǐ.回 huí verb to turn to turn around; to circle or revolve; to curve or wind around