We found 2 dictionaries that define the word be sitting on a goldmine:

General (1 matching dictionary)

1. be sitting on a goldmine: Longman Dictionary of Contemporary English

Miscellaneous (1 matching dictionary)

2. be sitting on a goldmine: Idioms

▸ Words similar to be sitting on a goldmine ▸ Usage examples for be sitting on a goldmine ▸ Idioms related to be sitting on a goldmine ▸ Wikipedia articles (New!) ▸ Words that often appear near be sitting on a goldmine ▸ Rhymes of be sitting on a goldmine ▸ Invented words related to be sitting on a goldmine