boom

a deep prolonged loud noise

a state of economic prosperity

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"

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

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

make a resonant sound, like artillery; "His deep voice boomed through the hall"

hit hard; "He smashed a 3-run homer"

be the case that thunder is being heard; "Whenever it thunders, my dog crawls under the bed"

make a deep hollow sound; "Her voice booms out the words of the song"

grow vigorously; "The deer population in this town is thriving"; "business is booming"