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carpool

[kahr-pool] /ˈkɑrˌpul/
noun, Also, car pool
1.
Also, carpooling, car pooling. an arrangement among a group of automobile owners by which each owner in turn drives the others or their children to and from a designated place.
2.
those included in such an arrangement.
verb (used without object)
3.
Also, car-pool. to form or participate in a carpool.
Origin
1940-1945
1940-45; car1 + pool2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for car pool

carpool

/ˈkɑːˌpuːl/
verb, noun
1.
another term for carshare
Derived Forms
carpooling, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for car pool
carpool
by 1942, Amer.Eng., from car + pool (2).
Online Etymology Dictionary, © 2010 Douglas Harper
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