The word a chinese samurai says before he kills someone. Also can be used in simple conversation when speaking about a samauri that killed someone after saying the word as a preliminate.
Dude: "Yo did you moosha that guy?"

Samurai: "I mooshad him."
by B. Manley January 23, 2008
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long faced, sad ,expression of sadness,facial expression like someone killed your dog
Episode 42 The Sopranos
Christopher says " whats the matter you look a little moosha moosh "
by New York WOP February 21, 2008
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