from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. In or into a house or building.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In or into a building.
from the GNU version of the Collaborative International Dictionary of English
- n. within the house.
- adv. Within the house; -- sometimes separated, in doors.
from The Century Dictionary and Cyclopedia
- Within doors; into or inside a house or building.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. within a building
indoor + -s (Wiktionary)