\Ob"tu*ra`tor\, n.
1. (Ordnance) Any device for preventing the escape of gas
   through the breech mechanism of a breech-loading gun; a
   gas check.
2. (Photog.) A camera shutter.

\Ob"tu*ra`tor\, n. [NL., fr. L. obturare to stop up:
cf.F. obturateur.]
1. That which closes or stops an opening.
2. (Surg.) An apparatus designed to close an unnatural
   opening, as a fissure of the palate.

\Ob"tu*ra`tor\, a. (Anat.)
Serving as an obturator; closing an opening; pertaining to,
or in the region of, the obturator foramen; as, the obturator
nerve.
{Obturator foramen} (Anat.), an opening situated between the
   public and ischial parts of the innominate bone and closed
   by the obturator membrane; the thyroid foramen.