/pas"throoh', pahs"-/ , 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.
4. denoting a pass-through; passalong.
Also, passthrough .
[ 1950-55, Amer.; n. and adj. use of v. phrase pass through ]