"Passed over" means that someone has been denied a well-deserved promotion or bonus.
Professor Smith, who has been with the university for 26 years, was passed over for tenure; the blonde woman professor with the long legs and big boobs got tenure though, despite working at the university for only 2 years.
adj: Someone in the military who was eligible for promotion to the next rank due to time in grade but did not receive it.
DUDE: The colonel's outta here next month man, he's been passed over three times for that star now.
HOMIE: No shit. Not surprised, he's not what I'd call a "people person" ya know.
DUDE: Werd. How does a micro-managing prick get that far up anyway?