Etymology: Middle English, probably from blusshen
Date: 14th century
Definition: a reddening of the face especially from shame, modesty, or confusion
Example: Sitting in the hairdresser's chair waiting for the San Tropez color to set and watching clips of Michael Phelps on TV, suddenly realizing I'm singing out loud, "Coo coo ka choo, Mrs. Robinson".
Lord help me.