Definition of BOOM

  1. (noun)a deep prolonged loud noise
  2. (noun)a state of economic prosperity
  3. (noun)a sudden happening that brings good fortune (as a sudden opportunity to make money)
  4. (noun)a pole carrying an overhead microphone projected over a film or tv set
  5. (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
  6. (verb)make a resonant sound, like artillery
  7. (verb)hit with great force
  8. (verb)be the case that thunder is being heard
  9. (verb)make a deep hollow sound
  10. (verb)grow vigorously