Focus on the pronunciation of goldmine
English definition of “goldmine”
/ˈɡəʊldmaɪn/ noun [C] NATURAL RESOURCES
› a place where gold is taken from the ground
› something from which a person, company, etc. can earn a lot of money or that can provide a lot of something that people want: Manufacturers of computer-aided design systems are competing to take advantage of this potential goldmine.a goldmine of sth There's a goldmine of multimedia information at the site.