boom meaning and definition

BOOM noun

Definition of boom (noun)

1. a deep prolonged loud noise
   • synonyms: roar, roaring, thunder
2. a state of economic prosperity
3. a sudden happening that brings good fortune (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"
   • synonyms: bonanza, bunce, godsend, gold rush, gravy, manna from heaven, windfall
4. a pole carrying an overhead microphone projected over a film or tv set
   • synonyms: microphone boom
5. any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring

BOOM verb

Definition of boom (verb)

1. make a resonant sound, like artillery
   • "His deep voice boomed through the hall"
   • synonyms: din
2. hit hard
   • "He smashed a 3-run homer"
   • synonyms: blast, nail, smash
3. be the case that thunder is being heard
   • "Whenever it thunders, my dog crawls under the bed"
   • synonyms: thunder
4. make a deep hollow sound
   • "Her voice booms out the words of the song"
   • synonyms: boom out
5. grow vigorously
   • "The deer population in this town is thriving"; "business is booming"
   • synonyms: expand, flourish, thrive