1
- a loud, deep, resonant sound低沉有回响的声音; 隆隆声：
the deep boom of the bass drum.
低音鼓的低沉声。
1.1
- the characteristic resonant cry of the bittern麻的鸣叫声。
no obj.
1- make a loud, deep, resonant sound发出低沉有回响的声音; 发出隆隆声：
thunder boomed in the sky
空中传来隆隆的雷声
her voice boomed out.
她说话声音低沉。
1.1
- with direct speech say in a loud, deep, resonant voice用深沉的声音讲话：
'Stop right there,' boomed the Headmaster.
“站住！”校长用低沉的声音说。
1.2
- (of a bittern) utter its characteristic resonant cry（麻）鸣叫。
短语
boom boom
- Brit. informal an exclamation made after delivering the punchline of a joke〈英, 非正式〉［讲完笑话中的妙语后用的感叹词］梆梆！
- ORIGIN: popularized by the fox puppet Basil Brush, a character in a British television comedy show.
派生词
boominess
nounboomy
adjective词源
late Middle English (as a verb)： ultimately imitative; perhaps from Dutch bommen 'to hum, buzz'.
- a period of great prosperity or rapid economic growth迅速增长, 繁荣（期）：
the London property boom
伦敦地产的暴涨
as modifier the boom years of the late 1980s.20世纪80年代后期的繁荣期。
no obj.
- experience a period of great prosperity or rapid economic growth繁荣, 昌盛：
business is booming.
商业蓬勃发展。
派生词
boomlet
nounboomy
adjective词源
late 19th cent. (originally US)： probably from BOOM1 .
1
- a long pole or rod, in particular吊杆, 尤指：
1.1
- a pivoted spar to which the foot of a vessel's sail is attached, allowing the angle of the sail to be changed张帆杆。
1.2
- often as modifier a movable arm over a television or film set, carrying a microphone or camera话筒吊杆; （摄影机升降架的）支臂：
a boom mike.
带有吊杆的话筒。
1.3
- a floating beam used to contain oil spills or to form a barrier across the mouth of a harbour or river水栅, 拦障。
词源
mid 16th cent. （in the general sense 'beam, pole'）： from Dutch, 'beam, tree, pole'; related to BEAM.