1 definition by marcielou
An attitude displayed by one who structs around the office and enforces their new found power from a promotion in an unprofessional way.
Say Sue did you notice that every since Tina got her promotion she's been an absolute tyrant to everyone in the office? --I know, she's suffering with peacockism and there is no cure for it at the moment.
by marcielou May 24, 2011