Used to suggest the sound of an explosion. / Used to suggest something happening suddenly and unexpectedly. / The sound of a bass drum beating. / The sound of a cannon firing.

(nautical) A spar extending the foot of a sail; a spar rigged outboard from a ship's side to which boats are secured in harbour. / A movable pole used to support a microphone or camera.

To make a loud, hollow, resonant sound. / (transitive, figuratively, of speech) To exclaim with force, to shout, to thunder. / Of a Eurasian bittern, to make its deep, resonant territorial vocalisation.

(economics, business) A period of prosperity, growth, progress, or high market activity.

(intransitive) To flourish, grow, or progress. / (transitive, dated) To cause to advance rapidly in price.

A low-pitched, resonant sound, such as of an explosion. / A rapid expansion or increase. / (aviation) Ellipsis of sonic boom. / One of the calls of certain monkeys or birds.

simple past tense and past participle of boom

Third-person singular simple present indicative form of boom

plural of boom

present participle of boom