Kalmar “rhinencephalon” tana nufin wani sashe na kwakwalwa, wanda kuma aka sani da bawo mai kamshi, wanda ke da hannu cikin ma’anar wari. Tsari ne mai rikitarwa wanda yake a gaban gaban kwakwalwa kuma ya hada da kwandon wari da sauran sifofi masu alaƙa. Kalmar "rhinencephalon" ta fito ne daga kalmomin Helenanci "rhis" ma'ana "hanci," da "enkephalos" ma'ana "kwakwalwa."
