boom
boom&+{1}
[buːm]
vb
to make a deep prolonged resonant sound, as of thunder or artillery fire
to prosper or cause to prosper vigorously and rapidly
business boomed
n
a deep prolonged resonant sound
the boom of the sea
the cry of certain animals, esp the bittern
a period of high economic growth characterized by rising wages, profits, and prices, full employment, and high levels of investment, trade, and other economic activitySee depression
boom
boom&+{2}
[buːm]
n
a spar to which a sail is fastened to control its position relative to the wind
a beam or spar pivoting at the foot of the mast of a derrick, controlling the distance from the mast at which a load is lifted or lowered
a pole, usually extensible, carrying an overhead microphone and projected over a film or television set
a barrier across a waterway, usually consisting of a chain of connected floating logs, to confine free-floating logs, protect a harbour from attack, etc.the area so barred off
柯林斯
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