What is the meaning of Boxcar?

An enclosed railway goods wagon, typically with a sliding door.

To reduce to a boxcar function.

Extremely large.

A type of atrophic acne scar that forms a broad, box-like depression on the skin.

boxcar”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

healthline

Source: wiktionary.org