That which closes or stops an opening. [1913 Webster]
An apparatus designed to close an unnatural opening, as a fissure of the palate. [1913 Webster]
Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check. [Webster 1913 Suppl.]
A camera shutter. [Webster 1913 Suppl.]
, a.
Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve. [1913 Webster]
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.