Airlock Definition
    noun
  
 An airtight chamber, usually located between two regions of unequal pressure, in which air pressure can be regulated.
 American Heritage 
A bubble or pocket of air or vapor, as in a pipe, that stops the normal flow of fluid through the conducting part.
 American Heritage 
Synonyms: 
  Other Word Forms of Airlock
Noun
Singular:
 airlockPlural:
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