[uhp-stairz] 
adverb, adjective, noun, plural -stairs.| 1. | up the stairs; to or on an upper floor. |
| 2. | Informal. in the mind: to be a little weak upstairs. |
| 3. | to or at a higher level of authority: You may have to take the matter upstairs. |
| 4. | Military Slang. at or to a higher level in the air. |
| 5. | Also, upstair. of, pertaining to, or situated on an upper floor: an upstairs window; an upstairs apartment. |
| 6. | (usually used with a singular verb ) an upper story or stories; the part of a building or house that is above the ground floor: The upstairs of this house is entirely rented. |
| 7. | a higher command or level of authority: We can't take action till we have approval from upstairs. |
| 8. | kick upstairs, to promote (a person) to a higher position, usually having less authority, in order to be rid of him or her. |
| up·stairs (ŭp'stârz') adv.
Of or located on an upper floor: an upstairs bedroom. n. (ŭp'stârz') (used with a sing. verb) The part of a building above the ground floor. |