A prop is something you use as a support, like a broom that serves as a prop to hold a door open. A prop is also something that goes on stage, like a garbage can in a Beckett play.

/prɑːp/ -pp- to support something physically, often by leaning it against something else or putting something under it: I propped my bike (up) against the wall.

'Prop' is the short form of proprietary. Prop shops employ a number of trading strategies for assets that range from simple liquid assets such as stocks and bonds to sophisticated instruments such as collateralized debt obligations (CDO), derivatives, and commodity futures.

"Props to you" is a phrase that means "respect to you" or "recognition to you." It is often used to show respect or admiration for something that someone has done or achieved, and is often used in casual or informal settings. The phrase can be used to express positive feelings or emotions towards someone.