gipper

gip (“clean [fish] for curing”) +‎ -er (agent noun suffix)

• (General American) enPR: gĭʹpər, IPA^(key): /ˈɡɪpɚ/

gipper (plural gippers)

1. (obsolete except dialectal) One who gips (cleans fish in preparation for curing).
   • 1641, Simon Smith, The Herring-Busse Trade […]‎, page 9:

     One man takes the Herrings out of the Well with the Ladnet, and fils the Gippers baskets. ¶ 9 Gippers which cut their throats, and takes out the Guts, and fling the ful Herring into one Basket, and the ſhotten Herring into another.

• “gipper, n.” under “gip, v.”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, launched 2000.

• grippe