folding-bone

plural folding-bones

1. Synonym of bone folder.

   On the opposite side of the spacious hall, however, sat approximately a dozen Indians with their legs crossed, busily folding the printed sheets that had been delivered with the folding-bone, by hand.

   1996, Heinz Götze, translated by Mary Schäfer, Springer-Verlag: History of a Scientific Publishing House, volume 2, Springer, page 233

   Synonyms: bone folder