hog's back
1. An exaggerated curve of the spine of a book,
caused by improper rounding, the use of a sewing
thread that is too thick, or a combination of the
two. 2. An uneven trim of the fore edge of a book
that is cut with the plow, caused by the plow
knife riding up as it traverses the length of the
book. (65 , 159 )
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