Definition of "upstairs" []

• Up the stairs: raced upstairs. (adverb)
• To or on a higher floor: went upstairs to go to bed. (adverb)
• To or at a higher level: promoted upstairs to management. (adverb)
• Of or located on an upper floor: an upstairs bedroom. (adjective)
• The part of a building above the ground floor. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "His side also got a lot of roof damage, so his upstairs is a big, fallen-plaster, mess."
• ""Is that your quarrel with what you call the upstairs god system?""
• "Meanwhile, the nice family living upstairs is starting to worry about the workaholic Dr. Jekyll."