pass through

pass through (third-person singular simple present passes through, present participle passing through, simple past and past participle passed through)

1. To transit something.
   • 1978, “CHINESE EASTERN RAILWAY”, in Joseph L. Wieczynski, editor, The Modern Encyclopedia of Russian and Soviet History‎, volume 7, Academic International Press, →ISBN, →LCCN, →OCLC, page 49:

     Beginning where the road crosses the Sino-Soviet frontier at Man-chou-li, it passes through Hailar and Ha-erh-pin (Harbin) and ends when it crosses back into Soviet territory at Sui-fen-ho (Pogranichnaia). During its history it has been known as the Trans-Manchurian Railway, the North Manchurian Railway, the Chinese Changchun Railway and the Harbin Railway. The main line from Man-chou-li to Sui-fen-ho is 950 miles in length.

2. To make something move through something else.

   The dough is passed through the pasta machine several times.

3. To infiltrate.

   We passed through enemy lines in the fog.

4. To undergo; to experience.

• passer-through

pass through (plural pass throughs)

1. (US) 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.