What is Inhibition Against A Wife?

Legal Definition
In Scotch law. A writ in the sovereign's name, passing the signet, which prohibits all and sundry from having transactions with a wife or giving her credit. Bell; Ersk. Inst. 1, 6, 26.
-- Black's Law Dictionary
Legal Definition
A writ to prohibit business transactions with a married woman.
-- Ballentine's Law Dictionary