boom

(noun) a deep prolonged loud noise. Synonyms: roar, roaring, thunder.

(noun) a state of economic prosperity.

(noun) a sudden happening that brings good fortune (as a sudden opportunity to make money). Synonyms: bonanza, gold rush, gravy, godsend, manna from heaven, windfall, bunce. Example: "The demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line."

(noun) a pole carrying an overhead microphone projected over a film or tv set. Synonyms: microphone boom.

(noun) 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.

(verb) make a resonant sound, like artillery. Synonyms: din. Example: "His deep voice boomed through the hall."

(verb) hit hard. Synonyms: smash, nail, blast. Example: "He smashed a 3-run homer."

(verb) be the case that thunder is being heard. Synonyms: thunder. Example: "Whenever it thunders, my dog crawls under the bed."

(verb) make a deep hollow sound. Synonyms: boom out. Example: "Her voice booms out the words of the song."

(verb) grow vigorously. Synonyms: thrive, flourish, expand. Examples: "The deer population in this town is thriving." "Business is booming."