crapshoot
1. [ noun ] a risky and uncertain venture
Examples:

"getting admitted to the college of your choice has become a crapshoot"

Related terms: risk colloquialism
2. [ noun ] (games) a gambling game using two dice
Synonyms: crap_shooting crap_game craps
Related terms: game_of_chance cast natural
Similar spelling:   crapshooter
  crap-shooter
  Cripps
  Crepis
  creeps