<p><strong>Noun:</strong></p><ul><li>A bridge or other structure for crossing over a river, highway, etc.</li><li>Genetics: Crossing over.</li><li>A genotype resulting from crossing over.</li><li>Popular Music: The act of crossing over in style, usually with the intention of broadening the commercial appeal to a wider audience.</li><li>Music that crosses over in style, occasionally sharing attributes with several musical styles and therefore often appealing to a broader audience.</li><li>U.S. Politics: A member of one political party who votes for the candidate of another party in a primary (also called crossover voter).</li><li>A crossover network.</li><li>Railroads: A track structure composed of two or more turnouts, permitting movement of cars from either of two parallel and adjacent tracks to the other.</li><li>Dance: A step in which dancers exchange places.</li><li>A step involving partners in which the woman moves from one side of her partner to the other, crossing in front of him.</li><li>Bowling: A ball that strikes the side of the head pin opposite to the bowling hand of the bowler.</li><li>(In plumbing) A U-shaped pipe for bypassing another pipe.</li></ul>