Pronunciation: (pas'thrOO", päs'-),[key] —n. 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.
—adj. denoting a pass-through; passalong. Also,pass'through".