1. A mini-van; often as a method of conveyance for center- or high-school elderly blonde females to and from football rehearse, junior proms, etc. Origin: Neal Stephenson's novel Snowcrash- maybe a pun on bento-box (a Japanese meal field pre-packed with nourishing treats).2. Any car driven by a soccermom. A car, usually from an extravagance marque particularly Lexus or Mercedes, based on a motor vehicle framework, but delivered as a utility automobile. It full does not have any off road prowess. Usually driven by affluent partners and mistresses. The driver will frequently be on a cell phone while operating the vehicle.