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. She was sitting at the desk with her chin propped on her hands.

Cambridge Free English Dictionary and Thesaurus.

WWW: World Wide Web. The World Wide Web is a set of all the websites connected to the internet worldwide. It is also known as WWW or Web. It is a system of interlinked hypertext documents accessed via the internet.