Top Definition
a short person (mostly a nick name for a girl in a gang)
loca:look at mousie
wicked: simon, thats why we gave her the name
by krazie13 March 18, 2011
A nickname for Macy. Specifically, a Macy with a very adorable and squeaky voice. She is a very talented artist and loves sushi. Aside from being beautiful and stunning, she has a great personality and is such a wonderful person. She doesn't like the name, but that's tough luck because I like it.
Guy 1: "Man, Mousie is great!!"
Guy 2: "I know! I wish we hung out more!"
Guy 3: "Team MCA. Nuff said."
by BroCode Scribe April 11, 2013
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