vapor lock

Definitions of vapor lock
  1. noun
    a stoppage in a pipeline caused by gas bubbles (especially a stoppage that develops in hot weather in an internal-combustion engine when fuel in the gas line boils and forms bubbles that block the flow of gasoline to the carburetor)
    synonyms: vapour lock
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    type of:
    block, blockage, closure, occlusion, stop, stoppage
    an obstruction in a pipe or tube
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