add. ·noun a camera shutter.
2. obturator ·noun that which closes or stops an opening.
3. obturator ·noun an apparatus designed to close an unnatural opening, as a fissure of the palate.
4. obturator ·add. ·noun any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.
5. obturator ·adj serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve.