1. a large migration of people to a newly discovered gold field

2. a sudden happening that brings good fortune (as a sudden opportunity to make money)

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;e.g. the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line

[…]nbsp;[…]nbsp;[…]nbsp;[…]nbsp;Synonym: boombonanzagravygodsendmanna from heavenwindfallbunce