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  1. Oxford American Dictionary

    boom

    • IPA[bo͞om]

    美式

    • n.
      a spar pivoting on the after side of the mast and to which the foot of a vessel's sail is attached, allowing the angle of the sail to be changed.；a movable arm over a television or movie set, carrying a microphone or camera

    • noun: boom, plural noun: booms

    • 釋義

    名詞

    • 1. a spar pivoting on the after side of the mast and to which the foot of a vessel's sail is attached, allowing the angle of the sail to be changed.
    • ▪ a movable arm over a television or movie set, carrying a microphone or camera a boom mike
    • ▪ a long beam extending upward at an angle from the mast of a derrick, for guiding or supporting objects being moved or suspended.
    • ▪ a floating beam used to contain oil spills or to form a barrier across the mouth of a harbor or river.
    • ▪ a retractable tube for inflight transfer of fuel from a tanker airplane to another airplane.