air hole

Noun
  1. A local region of low pressure or descending air that causes a plane to lose height suddenly (synset 111443142)
    is a type of: atmospheric phenomenon - a physical phenomenon associated with the atmosphere
    same as: air pocket, pocket
  2. A hole that allows the passage of air (synset 102692415)
    is a type of: hole - an opening deliberately made in or through something

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