S3 [væn] n
[Date: 1800-1900; Origin: caravan]
1.) a vehicle used especially for carrying goods, which is smaller than a ↑truck and has a roof and usually no windows at the sides
a delivery van
a van driver
2.) AmE a large box-like car that can carry a lot of people
3.) especially BrE a railway carriage with a roof and sides, used especially for carrying goods
a luggage van

Dictionary of contemporary English. 2013.

(of an army or a fleet), /