person one: omg look there’s maria murrin!
person two: omg she’s so cool i wanna marry her
person one: you cant marry her idiot she’s married to lars ulrich
A perfect girl. She is one that has values and ultimately a lass you could end up marrying. In everyday use it can become applied to any old sheila on the street, however, at the end of the day the true essence of a Murron is perfection. If someone is using the term overly liberally one must question whether or not they grasp the true concept.
Murron was Wallace's love in the movie Braveheart. The idea developed because of her.
"hey guys - I've found myself the perfect Murron today!"