1. [ verb ] make a resonant sound; as of artillery
Synonyms: din

: "His deep voice boomed through the hall."

Related terms: go blare
2. [ noun ] a deep prolonged loud noise
Synonyms: roar thunder roaring
Related terms: noise roar thunder
3. [ verb ] hit hard
Synonyms: smash blast nail

"He smashed a 3-run homer"

Related terms: hit blast
4. [ noun ] a sudden happening that brings good fortune (as a sudden opportunity to make money)
Synonyms: goldmine manna_from_heaven bunce godsend gold_rush gravy windfall bonanza

"the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line"

Related terms: happening
5. [ noun ] (economics) a state of economic prosperity
Related terms: prosperity
6. [ noun ] a pole carrying an overhead microphone projected over a film or tv set
Synonyms: microphone_boom
Related terms: pole
7. [ verb ] make a deep hollow sound
Synonyms: boom_out

"Her voice booms out the words of the song"

Related terms: go
8. [ verb ] grow stronger
Synonyms: flourish expand thrive prosper get_ahead

"The economy was booming"

Related terms: grow revive luxuriate
9. [ verb ] be the case that thunder is being heard
Synonyms: thunder

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

Related terms: thunder storm
10. [ noun ] Last name, frequency rank in the U.S. is 27963
11. [ noun ] (nautical) 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
Related terms: spar sailing_vessel
Similar spelling:   Bono