bus 
(bŭs)
(bŭs)n. pl. bus·esor bus·ses
1. A long motor vehicle for carrying passengers, usually along a fixed route.
2. Informal A large or ungainly automobile.
3. A four-wheeled cart for carrying dishes in a restaurant.
4. Electricity A bus bar.
5. Computers A parallel circuit that connects the major components of a computer, allowing the transfer of electric impulses from one connected component to any other.
v. bused, bus·ing, bus·esor bussed , bus·sing , bus·ses
v. tr.
1. To transport in a bus.
2. To transport (schoolchildren) by bus to schools outside their neighborhoods, especially as a means of achieving racial integration.
3.
a. To carry or clear (dishes) in a restaurant.
b. To clear dishes from (a table).
v. intr.
Idiom: 1. To travel in a bus.
2. To work as a busboy.
throw (someone) under the bus
To sacrifice or betray (another) for one's own gain or in order to save oneself: “That is no reason ... for a principled President to throw a large section of the country's labor force under the bus” (Steve Coll).
[Short for OMNIBUS. V., intr., sense 2, back-formation from BUSBOY.]