3. (noun)boom, bonanza, gold rush, gravy, godsend, manna from heaven, windfall, bunce a sudden happening that brings goodfortune (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"
5. (noun)boom a line of connected floating timbers stretched across a river, or inclosing an area of water, to keep saw logs, etc., from floating away
6. (noun)boom a hollow roar, as of waves or cannon; also, the hollow cry of the bittern; a booming
7. (noun)boom a strong and extensive advance, with more or less noisy excitement; -- applied colloquially or humorously to market prices, the demand for stocks or commodities and to political chances of aspirants to office; as, a boom in the stock market; a boom in coffee
8. (verb)boom to extend, or push, with a boom or pole; as, to boom out a sail; to boom off a boat
9. (verb)boom to cry with a hollow note; to make a hollow sound, as the bittern, and some insects
Definition of boom 
