Definition of rouping wife in US English:

rouping wife

noun

historical
  • A woman who holds a roup, a female auctioneer; (also) a woman who buys goods at a roup for the purpose of selling them on again at a profit.

Origin

Late 18th century; earliest use found in John Sinclair (1754–1835), agricultural improver, politician, and codifier of ‘useful knowledge’.