nibs
noun /nɪbz/
  /nɪbz/
Word Originearly 19th cent.: of unknown origin; compare with earlier nabs, used similarly with a possessive adjective as in his nabs, on the pattern of references to the aristocracy such as his lordship.
Idioms Idioms 
his nibs 
- (old-fashioned, British English, informal) used to refer to a man who is, or thinks he is, more important than other people
- What time did his nibs get up?