Definition of nast :.
(năst)
1. (n.) Filth; usually, but not necessarily, identifiable.
Origins: A shortened form of Middle English term nasty.
Example: There is nast all over my carpet.
Submitted by: Anonymous, Topics: Health & Medicine, Home & Garden
2. (interj.) Used to express disgust or offense.
Example: Aww, Nast!
Submitted by: Anonymous, Topics: Miscellaneous
