Definition of multi-prop:
(n) :
(bridge) A contract bridge convention whereby the opening bid of 2♦ shows several possible types of hands.
(n) :
(informal) Neolamprologus multifasciatus (small shell-dwelling cichlid endemic to Lake Tanganyika, popular as aquarium fish)
(n) :
(informal, paleontology) A multituberculate.
(n) :
(fandom slang) Clipping of multistan. [(fandom slang) A person who is a stan (“obsessive fan”) of multiple people or things, especially K-pop performers.]