corpus cavernosum

corpus ca·ver·no·sum

noun \-ˌkav-ər-ˈnō-səm\

plural corpora ca·ver·no·sa \-sə\

Definition of CORPUS CAVERNOSUM

: a mass of erectile tissue with large interspaces capable of being distended with blood; especially : one of those that form the bulk of the body of the penis or of the clitoris