Definition of "upstairs" in English

adjective

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

   • We rent out the upstairs bedroom to a student.

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

   • That fastball was upstairs for a ball.

adverb

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.
   • Marsha, let’s go upstairs!

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.

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

noun

1. An upper storey.

2. (slang, euphemistic) A woman's breasts.