Lying on one's side.

If there's any doubt if the character is lying on their side, then a simple benchmark is: If both hips are even, then the character is on their stomach and should be tagged with the [[on stomach]] tag instead.

h4. See also
* [[fetal position]]
* [[on|'on...' tags]]
* [[on back]]
* [[on stomach]]
横臥 松葉崩し 侧躺