walling, n.
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The act of making a wall or walls. [1913 Webster]
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Walls, in general; material for walls. [1913 Webster]
Walling wax, a composition of wax and tallow used by etchers and engravers to make a bank, or wall, round the edge of a plate, so as to form a trough for holding the acid used in etching, and the like. Fairholt.