Definition of God's cope in US English:

God's cope

noun

rare, archaic
  • A proverbial expression for: something impossible to obtain; a very large sum.

Origin

Late Middle English; earliest use found in The Tale of Beryn. Probably from the genitive of god + either cope (although this is apparently first attested later) or its etymon Middle Dutch coop purchase, financial transaction (Dutch koop).

Pronunciation

God's cope

/ɡɒdz ˈkəʊp/