[ boom ]
/ bum /
Nautical. any of various more or less horizontal spars or poles for extending the feet of sails, especially fore-and-aft sails, for handling cargo, suspending mooring lines alongside a vessel, pushing a vessel away from wharves, etc.
- an outrigger used on certain aircraft for connecting the tail surfaces to the fuselage.
- a maneuverable and retractable pipe on a tanker aircraft for refueling another aircraft in flight.
- chord1(def 4).
a chain, cable, series of connected floating timbers, or the like, serving to obstruct navigation, confine floating timber, etc.
the area thus shut off.
Machinery. a spar or beam projecting from the mast of a derrick for supporting or guiding the weights to be lifted.
(on a motion-picture or television stage) a spar or beam on a mobile crane for holding or manipulating a microphone or camera.
verb (used with object)
to extend or position, as a sail (usually followed by out or off).
to manipulate (an object) by or as by means of a crane or derrick.
verb (used without object)
to sail at full speed.
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Idioms for boom
lower the boom, to take decisive punitive action: The government has lowered the boom on tax evaders.
Origin of boom2
1635–45; < Dutch: tree, pole, beam
OTHER WORDS FROM boomboom·less, adjective
Words nearby boom
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for lower the boom (1 of 2)
/ (buːm) /
to make a deep prolonged resonant sound, as of thunder or artillery fire
to prosper or cause to prosper vigorously and rapidlybusiness boomed
a deep prolonged resonant soundthe boom of the sea
the cry of certain animals, esp the bittern
a period of high economic growth characterized by rising wages, profits, and prices, full employment, and high levels of investment, trade, and other economic activityCompare depression (def. 5)
any similar period of high activity
the activity itselfa baby boom
Word Origin for boom
C15: perhaps from Dutch bommen, of imitative origin
British Dictionary definitions for lower the boom (2 of 2)
/ (buːm) /
nautical a spar to which a sail is fastened to control its position relative to the wind
a beam or spar pivoting at the foot of the mast of a derrick, controlling the distance from the mast at which a load is lifted or lowered
a pole, usually extensible, carrying an overhead microphone and projected over a film or television set
- a barrier across a waterway, usually consisting of a chain of connected floating logs, to confine free-floating logs, protect a harbour from attack, etc
- the area so barred off
Word Origin for boom
C16: from Dutch boom tree, beam
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Idioms and Phrases with lower the boom
see lower the boom.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.