n (automotive) A motor vehicle for transporting large numbers of people along roads; by extension, the driver of said vehicle
n An electrical conductor or interface serving as a common connection for two or more circuits or components.
n Part of a MIRV missile, having on-board motors used to deliver the warhead to a target.
n (medical industry, slang) An ambulance.
v (transitive, automotive, transport) To transport via a motor bus.
v (transitive, automotive, transport, chiefly US) To transport students to school, often to a more distant school for the purposes of achieving racial integration.
v (intransitive, automotive, transport) To travel by bus.
v (transitive, US, food service) To clear meal remains from.
v (intransitive, US, food service) To work at clearing the remains of meals from tables or counters; to work as a busboy.