Top Definition
Like a murmur, only slightly louder.
You: "Is that a murmur I'm hearing?"
Me: (slight pause) "No, definitely a mirmir."
by Ameliorate May 15, 2007
An adjective used to describe a person that constantly smokes weed and who is content with his/her state, resenting any sort of criticism from others.

Origin unknown. I first heard it in an email thread.
Sam has been smoking weed all day and when I told him that he should stop for the day, he told me that I was being a prick. He was acting like such a mir mir!
by Eddie October 27, 2004
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