— Smyth-sewn , adj.
/smuyth, smith/ , Bookbinding.
a method of sewing together folded, gathered, and collated signatures with a single thread sewn through the folds of individual signatures.
Also, Smythe sewing .
[ after David M. Smyth (1833-1907), Irish-born U.S. inventor, who designed a machine performing this kind of sewing ]