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pass-through

or pass·through

[pas-throo, pahs-]
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noun
  1. a windowlike opening, as one for passing food or dishes between a kitchen and a dining area.
  2. a place through which one passes or is obliged to pass: Motorists used the park as a pass-through. The new gate will be a pass-through for security clearance.
  3. passalong.
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adjective
  1. denoting a pass-through; passalong.
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Origin of pass-through

1950–55, Americanism; noun and adj. use of verb phrase pass through
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018