from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. Up the stairs; on a higher floor or level.
  • adv. In the brain.
  • adj. located higher up a building.
  • adj. a pitched ball that is high, and usually outside the strike zone

from the GNU version of the Collaborative International Dictionary of English

  • adj. Being above stairs.
  • adv. Up the stairs; in or toward an upper story.
  • n. See Upstairs in the Vocabulary.

from The Century Dictionary and Cyclopedia

  • In or to an upper story: as, to go up-stairs.
  • Pertaining or relating to an upper story or flat; being above stairs: as, an up-stairs room.
  • n. An upper story; that part of a building which is above the ground floor.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adv. with respect to the mind
  • adv. on a floor above
  • adj. on or of upper floors of a building
  • n. the part of a building above the ground floor


From up + stair + -s (Wiktionary)



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