obturate

To obturate is to block an opening. Your dentist may obturate the hole where she performed a root canal. If she doesn't, you'll be in some serious pain.

The verb obturate is really more formal or technical than an everyday word like "block" or "obstruct," but you can use it as a substitute if you want to. It's more often used to describe the mechanism of a firearm, in which a bullet is designed to obturate the inside of a gun's barrel, increasing the pressure with which it's fired. The Latin root, obturat, means "stopped up."

Definitions of obturate
  1. verb
    block passage through
    synonyms: block, close up, impede, jam, obstruct, occlude
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    Antonyms:
    disengage, free
    free or remove obstruction from
    types:
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    block off, blockade
    obstruct access to
    barricade, barricado
    block off with barricades
    barricade
    prevent access to by barricading
    asphyxiate, choke, stifle, suffocate
    impair the respiration of or obstruct the air passage of
    tie up
    restrain from moving or operating normally
    dam, dam up
    obstruct with, or as if with, a dam
    block out, screen
    prevent from entering
    earth up, land up
    block with earth, as after a landslide
    bar, barricade, block, block off, block up, blockade, stop
    render unsuitable for passage
    back up, choke, choke off, clog, clog up, congest, foul
    become or cause to become obstructed
    gum up
    stick together as if with gum
    block off, close off, shut off
    block off the passage through
    shade
    protect from light, heat, or view
    close
    bar access to
    crap up
    become obstructed or chocked up
    block, choke up, lug, stuff
    obstruct
    silt, silt up
    become chocked with silt
    type of:
    hinder, impede
    be a hindrance or obstacle to
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