Ob·tu·rate v. t. [imp. & p. p. Obturated p. pr. & vb. n. Obturating ] To stop or close, as an opening; specif., Ordnance, to stop (a gun breech) so as to prevent the escape of gas in firing.
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obturate
v : block passage through; "obstruct the path" [syn: obstruct,
impede, occlude, jam, block, close up] [ant: free]