1. Ore that yields a substantial profit to the miner 
2. A profitable success
   "the inventor worked for years before hitting pay dirt"

Type of: ore, success

• flagellant
• Flagellata
• flagellate
• flagellate protozoan
• flagellated
• flagellated cell
• flagellated protozoan
• flagellation
• flagellum
• flageolet
• flagfish
• flagging
• flagitious
• flagman
• flagon
• flagpole
• flagrance
• flagrancy
• flagrant
• flagrantly
• flagroot
• flagship
• flagstaff
• flagstone
• Flagyl