'Bluebeard' definitions:

Definition of 'Bluebeard'

From: WordNet
noun
(fairytale) a monstrous villain who marries seven women; he kills the first six for disobedience

Definition of 'Bluebeard'

From: GCIDE
  • Bluebeard \Blue"beard\, n. The hero of a medi[ae]val French nursery legend, who, leaving home, enjoined his young wife not to open a certain room in his castle. She entered it, and found the murdered bodies of his former wives. -- Also used adjectively of a subject which it is forbidden to investigate. [1913 Webster]
  • The Bluebeard chamber of his mind, into which no eye but his own must look. --Carlyle. [1913 Webster]