Definition of boom :
1. A hollow roar, as of waves or cannon; also, the hollow cry of the bittern; a booming.
2. A line of connected floating timbers stretched across a river, or inclosing an area of water, to keep saw logs, etc., from floating away.
3. A long pole or spar, run out for the purpose of extending the bottom of a particular sail; as, the jib boom, the studding- sail boom, etc.
4. A long spar or beam, projecting from the mast of a derrick, from the outer end of which the body to be lifted is suspended.
5. A pole with a conspicuous top, set up to mark the channel in a river or harbor.
6. 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.
7. A strong chain cable, or line of spars bound together, extended across a river or the mouth of a harbor, to obstruct navigation or passage.
8. To cause to advance rapidly in price; as, to boom railroad or mining shares; to create a boom for; as to boom Mr. C. for senator.
9. To cry with a hollow note; to make a hollow sound, as the bittern, and some insects.
10. To extend, or push, with a boom or pole; as, to boom out a sail; to boom off a boat.
11. To have a rapid growth in market value or in popular favor; to go on rushingly.
12. To make a hollow sound, as of waves or cannon.
13. To rush with violence and noise, as a ship under a press of sail, before a free wind.
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loudness (part of speech: noun)
snap (part of speech: noun)
- This great pocket of cord, fit to hold perhaps a bushel or more, is swung from the boom above, and lowered into the midst of the catch. - "American Merchant Ships and Sailors", Willis J. Abbot.
- As for the Coal enterprise nothing could possibly happen to disturb it; I was all ready for the first of July announcement and boom. - "The Deluge", David Graham Phillips.
- The Idol has been to see him twice, in the evening, and both times I have heard my father's jolly laugh boom out in a way the nurse says will have to stop, for it made Mother ask to see him and be ill because she couldn't. - "Phyllis", Maria Thompson Daviess.