[adv., n. doun-stairz; adj. doun-stairz] 
| 1. | down the stairs. |
| 2. | to or on a lower floor. |
| 3. | Also, downstair. pertaining to or situated on a lower floor, esp. the ground floor. |
| 4. | (used with a singular verb ) the lower floor or floors of a building: The downstairs is being painted. |
| 5. | the stairway designated for use by people descending: Don't try to go up the downstairs. |