pass through

Short definition from Wiktionary

Verb

1. 1
   To go through, to travel through, to transit or lie across a place or from one place to another.
2. 2
   To make something move through something else.
3. 3
   To undergo; to experience.
4. 4
   Synonym of infiltrate.

Noun

1. 1
   A framed, window-like aperture in the interior wall of a house, usually between a kitchen and dining room, through which items (especially food) can be passed. A serving hatch.
2. 2
   Alternative form of passthrough.