Air Lock Definition
    noun
  
 An airtight compartment, with adjustable air pressure, between places that do not have the same air pressure, as between the working compartment of a caisson and the outside.
 Webster's New World 
A blockage, as in a water pipe, caused by trapped air.
 Webster's New World 
Other Word Forms of Air Lock
Noun
Singular:
 air lockPlural:
 air locksAir Lock Is Also Mentioned In
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