What is milling?

milling meaning in Information Science terminology / glossary / dictionary is:

Cutting away a small portion of the binding edge of a book (usually less than one-eighth inch) to prepare the sections for adhesive binding or oversewing, an operation done in a bindery by moving the inner edge of the clamped text block over the rotating blades of a milling machine. In first-time binding, the back folds of the sections are cut away, producing loose leaves. In rebinding, the old adhesive, thread, staples, etc., are cut away along with the folds to prepare the leaves for reattachment.


reference: ABC-CLIO