upstairs

American Heritage® Dictionary of the English Language, Fourth Edition

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

Century Dictionary and Cyclopedia

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

Wiktionary

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

GNU Webster's 1913

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

WordNet 3.0

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