Either
a) An unpleasant patch of skin on one's nob
Or
b) An unpleasant person who the experience of spending time with is similar to a severe rash covering one's nob. Someone you can't get rid of easily.
Synonyms for Nobrash
On this page, you will find 30 slang terms related to Nobrash. Some of the top words include: Nobrash, sand in your vagina, assdaggar, Pound Sand, humping, and 25 more.