1841 S. Bamford I. xxxvii. 216 Some had been grinding scythes, others..screw-drivers, rusty swords, pikels, and mop-nails.
a1877 E. H. Knight II. 1474/2 Mop-nail, a flat-headed nail, used in securing a bunch of junk or rope-ends to a handle in making a mop such as sailors use.