from The Century Dictionary and Cyclopedia
- n. A tanners' vat in which the hides are steeped in a solution of tannin.
Sorry, no etymologies found.
I bought some leather from a tan-vat while in southwest
They would be suitably used wherever an astringent is required in medicine, and should be added with the leaves to the tan-vat.
Resources of the Southern Fields and Forests, Medical, Economical, and Agricultural. Being also a Medical Botany of the Confederate States; with Practical Information on the Useful Properties of the Trees, Plants, and Shrubs
Ef the calf's fat, the ole cow ain't got much choice betwixt the quogmire an 'the tan-vat. "