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ob·tu·ra·tor

n 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 .
 
 

 
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Rangely District Hospital (Rangely, Colorado - Rio Blanco County)