boom

verb

1. To make a loud, hollow, resonant sound.

   “Thunder boomed in the distance and lightning flashes lit up the horizon.”

   “The cannon boomed, recoiled, and spewed a heavy smoke cloud.”

2. figurativelyof speechTo exclaim with force, to shout, to thunder.

3. Of a Eurasian bittern, to make its deep, resonant territorial vocalisation.

4. To make something boom.

   “Men in grey robes slowly boom the drums of death.”

5. aviationTo subject to a sonic boom.

6. To rush with violence and noise, as a ship under a press of sail, before a free wind.

7. chess enginesTo rapidly adjust the evaluation of a position away from zero, indicating a likely win or loss.

8. To extend, or push, with a boom or pole.

   “to boom out a sail”

   “to boom off a boat”

9. usually with "up""down"To raise or lower with a crane boom.

10. To flourish, grow, or progress.

    “The population boomed in recent years.”

    “Business was booming.”

11. Be the case that thunder is being heardweather

    “Whenever it thunders, my dog crawls under the bed”

    Similar: thunder

noun

1. A low-pitched, resonant sound, such as of an explosion.

   “The boom of the surf.”

2. A rapid expansion or increase.

   “You should prepare for the coming boom in the tech industry.”

3. One of the calls of certain monkeys or birds.

4. chess enginesAn instance of booming.

5. sailingA spar extending the foot of a sail; a spar rigged outboard from a ship's side to which boats are secured in harbour.

6. A movable pole used to support a microphone or camera.

7. A microphone supported on such a pole.

8. A horizontal member of a crane or derrick, used for lifting.

9. electronicsThe longest element of a Yagi antenna, on which the other, smaller ones are transversally mounted.

10. A floating barrier used to obstruct navigation, for military or other purposes; or used for the containment of an oil spill or to control the flow of logs from logging operations.

11. A wishbone-shaped piece of windsurfing equipment.

12. The section of the arm on a backhoe closest to the tractor.

13. A gymnastics apparatus similar to a balance beam.

14. economicsbusinessA period of prosperity, growth, progress, or high market activity.

Ellipsis of sonic boom

interjection

1. Used to suggest the sound of an explosion.

   “crash boom bang”

2. Used to suggest something happening suddenly and unexpectedly.

3. The sound of a bass drum beating.

4. The sound of a cannon firing.