01 n. the upper level of a crossing of two highways at different levels; called in the United States an overpass; as, an overpass is called a fly…
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1.
the upper level of a crossing of two highways at different levels; called in the United States an overpass; as, an overpass is called a flyover or a flypast in England.[Brit.] Also: overpass
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2.
a low-altitude flight (usually of military aircraft) over spectators on the ground.