also carpool, car-pool
(~s, ~ing, ~ed)
1.
A ~ is an arrangement where a group of people take turns driving each other to work, or driving each other’s children to school. In American English, ~ is sometimes used to refer simply to people travelling together in a car.
...the carpool lanes in LA.
N-COUNT: also N n
2.
If a group of people ~, they take turns driving each other to work, or driving each other’s children to school. (mainly AM or AUSTRALIAN)
The government says fewer Americans are carpooling to work.
VERB: V
3.
A ~ is a number of cars that are owned by a company or organization for the use of its employees or members. (BUSINESS)
N-COUNT