Nearby words

  1. boolean,
  2. boolean algebra,
  3. boolean operation,
  4. boolean ring,
  5. boolean sum,
  6. boom box,
  7. boom shot,
  8. boom town,
  9. boom, sonic,
  10. boom-and-bust

Origin of boom

1400–50; 1910–15 for def 10; late Middle English bombon, bummyn to buzz; cognate with Dutch bommen, German bummen, orig. imitative

Related formsboom·ing·ly, adverb


[ boom ]
/ bum /


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.

Origin of boom

1635–45; < Dutch: tree, pole, beam

Related formsboom·less, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for boom

British Dictionary definitions for boom


/ (buːm) /


to make a deep prolonged resonant sound, as of thunder or artillery fire
to prosper or cause to prosper vigorously and rapidlybusiness boomed


Word Origin for boom

C15: perhaps from Dutch bommen, of imitative origin


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
  1. 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
  2. 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

Word Origin and History for boom
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with 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.