For most African countries, the past two decades have been boom time.
boom—less than 60 seconds in, and a match had exploded in the gas tank.
“boom,” my boyfriend whispered to me softly when he noticed me looking out the window.
mid-15c., earliest use was for bees and wasps, probably echoic of humming. The meaning "make a loud noise" is 15c. Cf. bomb. Meaning "to burst into prosperity" (of places, businesses, etc.) is 1871, American English. Related: Boomed; booming. Boom box first attested 1978.
"long pole," 1540s, from Scottish boun, borrowed from Dutch boom "tree, pole, beam," from a Middle Dutch word analogous to Old English beam (see beam (n.)).
Wonderful; fashionable; outstanding; great (1990s+ Canadian students)
Marijuana (1950s+ Narcotics)