Surface to hang a picture on

•A kind of knot often used at the end of a rope; a wall knot; a wale.•A work or structure of stone, brick, or other materials, raised to some height, and intended for defense or security, solid and permanent inclosing fence, as around a field, a park, a town, etc., also, one of the upright inclosing parts of a building or a room.•A defense; a rampart; a means of protection; in the plural, fortifications, in general; works for defense.•An inclosing part of a receptacle or vessel; as, the walls of a steam-engine cylinder.•The side of a level or drift.•The country rock bounding a vein laterally.•To inclose with a wall, or as with a wall.•To defend by walls, or as if by walls; to fortify.•To close or fill with a wall, as a doorway.

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