Wiktionary
pass through
n. (context US English) 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. vb. 1 To transit something 2 To make something move through something else 3 To infiltrate
WordNet
pass through
v. make a passage or journey from one place to another [syn: transit, pass across, pass over]
cause to move through; "Pass a chemical through a solution"
pass through an enemy-line; in a military conflict [syn: infiltrate]