bonanza /bə-nanˈzə or bəʊ- or bo-/

1. A rich mine or vein of precious ore (N American)
2. A large amount of (usu) silver
3. Any source of wealth or stroke of luck

Very prosperous

• screeched
• screecher
• screechers
• screeches
• screech-hawk
• screech-hawks
• screechier
• screechiest
• screeching
• screech-martin
• screech-martins
• screech owl
• screech owls
• screech-thrush
• screech-thrushes
• screechy
• screed
• screeded
• screeder
• screeders
• screeding
• screeds
• screen
• screenable
• screenager