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movable barrier
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Barrier transfer machine
Barrier transfer machines, also known as zipper machines or road zipper, are heavy vehicles used to transfer concrete lane dividers, which are used to relieve traffic congestion during rush hours.
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| WordNet 2.0 | Download this dictionary |
movable barrier
Noun
1. a barrier that can be moved to allow passage
(hypernym) barrier
(hyponym) chicane
