upstairs

adj

1. Located on a higher floor or level of a building.

   “We rent out the upstairs bedroom to a student.”

2. (informal)Pertaining to a pitched ball that is high, and usually outside the strike zone.

   “That fastball was upstairs for a ball.”

adv

1. Up the stairs; on or to a higher floor or level.

   “I’ll take my shoes and put them away the next time I go upstairs.”

   “I hate the people who live upstairs, and I especially hate their piano.”

   “The woman upstairs told the people outside to stop reveling.”

   “There was more dancing and singing up stairs, more wit and conversation below; all were at liberty, and all stayed late; and all talked so much of the happiness they had enjoyed, that Lady Anne felt herself exceedingly tempted to give another party before the season finally closed.”

   “In a large bedroom upstairs, the window of which was thickly curtained with a great woollen shawl lately discarded by the landlady, Mrs. Rolliver, were gathered on this evening nearly a dozen persons, all seeking vinous bliss; […]”

2. (informal)In the brain or mind.

   “After Joe did a hula dance on the kitchen table, his friends wondered if he didn’t have a lot going on upstairs.”

   “I guess I'm just used to sailors / I think they got water on the brain / I think they got more water upstairs / Than they got sugar on a candy cane”

3. (informal)In heaven, especially with regard to where a deity might be found.

noun

1. An upper storey.
2. (euphemistic, slang)A woman's breasts.