Meaning & Definition of Boom in English

1. A deep prolonged loud noise

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"

4. A pole carrying an overhead microphone projected over a film or tv set

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

1. Make a resonant sound, like artillery

• "His deep voice boomed through the hall"

2. Hit hard

• "He smashed a 3-run homer"

3. Be the case that thunder is being heard

• "Whenever it thunders, my dog crawls under the bed"

4. Make a deep hollow sound

• "Her voice booms out the words of the song"

5. Grow vigorously

• "The deer population in this town is thriving"

• "Business is booming"