1) According to legend, the apprentice of the sword-smithing master, Masamune

2) A sword forged by Muramasa. Sometimes thought to be cursed or violent.

3) A sword used in RPGs, usually more violent/vengeful and inferior to the Masamune.
I used the Muramasa until I finally got the Masamune.
by AllUltima February 21, 2005
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A word used to describe when people are playing Muramasa: The Demon Blade.
"Hey, wanna hang out Clara"
"Cant, I'm Muramasaing"
"Piece of shit."
by Ken1ch1_ January 9, 2021
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