Top Definition
A huge disgusting fresh water hag, that lives in polluted sewer treatment plants or fetid pond water. Having long green curly hair, with a body shape similar to a walrus. Merhnmaids breed in april, they can be recognized by their hungry blood curdling screams, and their horrible songs. Beware!!! Keep your distance.
I was walking through the park when a Merhnmaid started rolling towards me, and I booked!
by bertini March 15, 2010

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