An added depression below a surface, as to receive the head of a nail, screw, or bolt. 2. The sinkage of any small area beneath the plane of the surface. (Saylor, 1952)
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An added depression below a surface, as to receive the head of a nail, screw, or bolt. 2. The sinkage of any small area beneath the plane of the surface. (Saylor, 1952)
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