from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An organic structure, such as the soft palate, that closes an opening in the body.
- n. A prosthetic device serving to close an opening in the body.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An object used to obstruct a hole.
from the GNU version of the Collaborative International Dictionary of English
- n. That which closes or stops an opening.
- n. An apparatus designed to close an unnatural opening, as a fissure of the palate.
- n. Any device for preventing the escape of gas through the breech mechanism of a breech-loading gun; a gas check.
- n. A camera shutter.
- adj. Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen.
from The Century Dictionary and Cyclopedia
- n. That which closes or stops up an entrance, cavity, or the like.
- n. In photography, the instantaneous shutter of a camera.
- n. Anything used to close the orifice of a hollow instrument, such as a speculum or catheter, during its introduction.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a prosthesis used to close an opening (as to close an opening of the hard palate in cases of cleft palate)
From Latin obtūrō ("to stop, block up"). (Wiktionary)