insula in·su·la (ĭn'sə-lə, ĭns'yə-)
n. pl. -lae (-lē')
Island.
A circumscribed body or patch on the skin.
See island of Reil.
island of Reil (rīl)
n.
An oval region of the cerebral cortex, lateral to the lentiform nucleus, and buried in the fissure of sylvius.. Also called insula.