Definitions for "downstairs"
Keywords:  upstairs, bathroom, floor, stairs, horn
on or of the lower floors of a building, especially the ground floor; as, the downstairs (or downstair phone; the house has no downstairs bathroom. Opposite of upstairs.
Down the stairs; to a lower floor; as, she headed downstairs as soon as she heard the horn.
Electronics in the control building, or generally anywhere but Upstairs.
Keywords:  board, bottom, game, portion, lower
Bottom of the board
The lower portion of the board, usually in reference to the 19s in a game of x01.