Crossing

a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other

a junction where one street or road crosses another

(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

a shallow area in a stream that can be forded

a point where two lines (paths or arcs etc.) intersect

a voyage across a body of water (usually across the Atlantic Ocean)

traveling across