Top definition
A very drab person who wears long, dull, grey attire. Their personality suits the wardrobe.
Billy: Ugh... it's grey matter again.
Sally: She's so boring.
by Earl Annie Edna July 22, 2008
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug