~ 1
■ noun a loud, deep, resonant sound.
■ verb make this sound.
Derivatives
~iness noun
~ing adjective
~y adjective
Origin
ME: ult. imitative; perh. from Du. bommen 'to hum, buzz'.
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~ 2
■ noun a period of great prosperity.
■ verb experience a ~: business is ~ing.
Derivatives
~y adjective
Origin
C19: prob. from ~ 1 .
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~ 3
■ noun
1》 a pivoted spar to which the foot of a vessel's sail is attached.
2》 a movable arm carrying a microphone or film camera.
3》 a floating beam used to contain oil spills or to form a barrier across a harbour mouth.
Origin
C16: from Du., 'beam, tree, pole'; related to beam .