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a sentient (yet unintelligible or unresponsive) occupying a narrow thoroughfare, requiring anyone with intentions of passing to manuever awkwardly close to said individual.
I almost missed my flight because a meatwall was blocking the walkway!
by meatwall449 July 23, 2011
another word for an arse and/or ass
Warren: I got banged in my meat walls
Person: You Fag

also see arse or ass
by Aaron.S June 03, 2007