a nickname for the city of detroit, that is a spin off of the main area code 313.

can be spelled in any variation, for example 30-1-3rd, or thirty-1-third.
if u ain't heard, i'm from the 31-3rd, the city of cars, also the city of stars, me and my nigga's say the city is scarred, from riots and snitches plus crack back in the 80's was large.
by AL-B in the 313 January 11, 2007

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Top Definition
another way of saying 313 which is the area code for detroit
Yea I live in da 313rd
by Darrius Lewis February 22, 2007

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