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A voyage across a body of water (usually across the Atlantic Ocean)
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Traveling across
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(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
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A path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other
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A junction where one street or road crosses another
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A point where two lines (paths or arcs etc.) intersect
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A shallow area in a stream that can be forded