lock chamber

Noun
  1. Enclosure consisting of a section of canal that can be closed to control the water level;
    Used to raise or lower vessels that pass through it (synset 103688405)
    is a type of: enclosure - a structure consisting of an area that has been enclosed for some purpose
    is a part of: canal - long and narrow strip of water made for boats or for irrigation
    same as: lock

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