manna from heaven man·naf·rom·heaven uncommon noun 1. (Old Testament) food that God gave the Israelites during the Exodus Synonymsmiraculous foodmannamanna from heaven 2. a sudden happening that brings good fortune (as a sudden opportunity to make money) “the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line” Synonymsboombonanzagold rushgravygodsendmanna from heavenwindfallbunce Related words Broader terms happeningfood WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.