boom

Noun

• 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

• a pole carrying an overhead microphone projected over a film or tv set

• 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
    

• a state of economic prosperity

• a deep prolonged loud noise

Verb

• grow vigorously
  • The deer population in this town is thriving
    
  • business is booming
    

• make a deep hollow sound
  • Her voice booms out the words of the song
    

• be the case that thunder is being heard
  • Whenever it thunders, my dog crawls under the bed
    

• hit hard
  • He smashed a 3-run homer
    

• make a resonant sound, like artillery
  • His deep voice boomed through the hall
    

Related words

• Synonyms: 
  microphone boom , bonanza , gold rush , gravy , godsend , manna from heaven , windfall , bunce , roar , roaring , thunder , thrive , flourish , expand , boom out , smash , nail , blast , din