Synonyms: windfall, manna from heaven, godsend, gold rush, gravy, bonanza, boom, bunce
Definition: a sudden happening that brings good fortune (as a sudden opportunity to make money)
Usage: the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line
Similar words: natural event, occurrence, occurrent, happening
Definition: an event that happens
Synonyms: bonanza
Definition: an especially rich vein of precious ore
Similar words: vein, mineral vein
Definition: a layer of ore between layers of rock