Definitions
Rapid increase or period of strong growth.
Word origin
Onomatopoeic, perhaps borrowed; compare German bummen, Dutch bommen (“to hum, buzz”). The sense "a period of economic growth" is generally taken to derive from the sense "a rapid expansion", although other origins have also been suggested.
Used in a sentence
“Thunder boomed in the distance and lightning flashes lit up the horizon.”
“The cannon boomed, recoiled, and spewed a heavy smoke cloud.”
“Beneath the cliff, the sea was booming on the rocks.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Rapid growth period”4 letters
02“Grow vigorously”4 letters
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