Definition of boom:
- A hollow roar, as of waves or cannon; also, the hollow cry of the bittern; a booming.
- A line of connected floating timbers stretched across a river, or inclosing an area of water, to keep saw logs, etc., from floating away.
- 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.
- 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.
- A pole with a conspicuous top, set up to mark the channel in a river or harbor.
- 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.
- 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.
- 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.
- To cry with a hollow note; to make a hollow sound, as the bittern, and some insects.
- To extend, or push, with a boom or pole; as, to boom out a sail; to boom off a boat.
- To have a rapid growth in market value or in popular favor; to go on rushingly.
- To make a hollow sound, as of waves or cannon.
- 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)
- "American Merchant Ships and Sailors", Willis J. Abbot.
- "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.