Main Entry: ob·tu·ra·tor

Pronunciation: \ˈäb-t(y)ə-ˌrāt-ər\

Function: noun

1 a : either of two muscles arising from the obturator membrane and adjacent bony surfaces: (1) : obturator externus (2) : obturator internus b : obturator nerve
2 a : a prosthetic device that closes or blocks up an opening (as a fissure in the palate) b : a device that blocks the opening of an instrument (as a sigmoidoscope) that is being introduced into the body