The Collaborative International Dictionary
Bluenoser
Bluenoser \Blue"nos`er\); a Nova Scotian potato, etc. [Webster 1913 Suppl.] blue-pencil \blue-pencil\ v. t. to change, delete, or abridge (a portion of a text) with a blue pencil (or as if with a blue pencil), as in the editing process; -- of books, etc.
Wiktionary
bluenoser
n. (context slang English) A person from Nova Scotia, Canada.