familiar or colloquial shortening of Philadelphia, attested by 1890, but from 1858 as the popular name of a ferry boat of that name that crossed the Delaware River from the city to Camden, and a city baseball team has been called the Phillies since 1883.
city in Michigan, U.S., from French détroit, literally "straits," from Old French destreit (12c.), from Latin districtum, neuter of districtus (see district (n.)). A French fort was built there 1701. By 1918 the city name was synonymous with "U.S. automobile manufacturing."