To accumulate, to pile up, to increase in stages.
To close up by building.
To strengthen.
In solitaire card games, to place a card over another card of lower value. (e.g., place 5♦ over 4♣)
To erect; to construct.
To reduce in altitude or magnitude, as hills and mountains; to wear down.
To lower in value or social position.
To reduce in quality or purity.