Main Entry: fos·sa

Pronunciation: \ˈfäs-ə\

Function: noun

Inflected Form(s): plural fos·sae \-ˌē, -ˌī\

: an anatomical pit, groove, or depression <the temporal fossa of the skull> <the fossa in the liver for the gallbladder>

—fos·sate \-ˌāt\ adjective