Air-tight a.
  1. So tight as to be impermeable to air or other gases; as, an air-tight cylinder; -- said of containers.
  Air-tight, n. A stove the draft of which can be almost entirely shut off. [Colloq. U. S.]
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  airtight
       adj 1: having no weak points; "an airtight defense"; "an airtight
              argument" [syn: air-tight]
       2: not allowing air or gas to pass in or out [syn: air-tight,
           gas-tight]
  air-tight
       adj 1: having no weak points; "an airtight defense"; "an airtight
              argument" [syn: airtight]
       2: not allowing air or gas to pass in or out [syn: airtight,
          gas-tight]