from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who substitutes for an actor while the lights and camera are adjusted or during hazardous action.
- n. A substitute.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A person of similar size and shape to an actor that "stands-in" for the actor during the lengthy process of setting up a shot, who, unlike a double, does not appear in the film.
- n. A substitute
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. someone who takes the place of another (as when things get dangerous or difficult)
to stand in (Wiktionary)