from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To close or obstruct.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To stop or close, as an opening
from The Century Dictionary and Cyclopedia
- To occlude, stop, or shut; effect obturation in.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. block passage through
Latin obtūrāre, obtūrāt-; see teuə- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)