What is Boom?

Boom definition and meaning on Dictionary terms:
verb (used without object)
to make a deep, prolonged, resonant sound.
to move with a resounding rush or great impetus.

to progress, grow, or flourish vigorously, as a business or a city: Her business is booming since she enlarged the store.

verb (used with object)
to give forth with a booming sound (often followed by out): The clock boomed out nine.
to boost; campaign for vigorously: His followers are booming George for mayor.

a deep, prolonged, resonant sound.
the resonant cry of a bird or animal.

a buzzing, humming, or droning, as of a bee or beetle.
a rapid increase in price, development, numbers, etc.: a boom in housing construction.
a period of rapid economic growth, prosperity, high wages and prices, and relatively full employment.
a rise in popularity, as of a political candidate.