Definition of Pony Express in English:

Pony Express

Syllabification: Po·ny Ex·press
A system of mail delivery operating from 1860 to 1861 over a distance of 1,800 miles (2,900 km) between St. Joseph, Missouri, and Sacramento, California, using continuous relays of horse riders.

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Word of the day envenom
Pronunciation: ɪnˈvɛnəm
verb
put poison on or into; make poisonous