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pontil
pontine
pontoon (1)
pontoon (2)
pontoon bridge
Pontypool
Pontypridd
pony
pony express
pony-trekking
pony up
ponyskin
ponytail
Ponzi scheme
poo
poo-poo
pooch
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pony express
po·ny ex·press


noun 
Definition:
 
pioneer mail system: a system of carrying mail using relays of horses and riders that operated from St. Joseph, Missouri, to Sacramento, California, from 1860 to 1861.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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