from The Century Dictionary.
- noun Nautical, a small rope fastened to the hook of the fish-block, and used to facilitate hooking the anchor.
Sorry, no etymologies found.
The town lay behind them in a glorifying haze; the river stretched silver-scaled in the moonlight, like a gigantic fish-back.
Maurice Guest 2003
A clear fire burned in a well-grate; a copper kettle on the hob shone like a great orange; the mahogany of the furniture, polished to looking-glass splendour, caught and gave back the flames, as did also, on the table spread for tea, a copper urn and the old dented, fish-back silver.
The Way Home 2003