A muscular male who is built like a brick shithouse. Someone you get caught mirin.

Synonyms: yoked, jacked, swole, wrecked
Guy 1: "Holy shit look at that guy's arms!"
Guy 2: "Yeah he's a fuckin' meat castle!"
Meat Castle: "You mirin brahh?"
by Gymrat September 09, 2012
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The erect state of the human male penis.
My girlfriends sister rode my meat castle until I blew my goo!
by $hIti0T November 09, 2014
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Homosexuals on steroids that love the word "Meat"
I left the gym cause there were Meat Castles everywhere and I don't get down like that.
by Whatitiswhatitdo93 November 30, 2014
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