Van
来自Big Physics
early 19th century: shortening of caravan.
wiktionary
Short for caravan.
Shortening of vanguard.
From Cornish.
From Latin vannus(“a van, or fan for winnowing grain”): compare French van and English fan, winnow. Doublet of fan.
etymonline
van (n.1)
"front part of an army or other advancing group," c. 1600, shortening of vanguard.
van (n.2)
"covered truck or wagon," 1829, shortening of caravan. Century Dictionary suggests this was perhaps regarded as *carry-van.
