1) Passageways for pedestrians 2) Swing dance move 
[dance] Crossovers are classic moves from Balboa (dance). The pattern is back - together - forward with a quick - quick - slow rhythm, or the down-hold rhythm. Lead: Crossovers can be done where both are going to the same side, or they are alternating. Crossovers also include swivels and fall off the log. See also Lollies (dance), Throwouts...
A method of gaining speed and turning corners in which skaters cross one foot over the other. There are both forward and backward crossovers.
The exchange of genetic material between two paired chromosome during meiosis.
Crossovers are the name given to a piece of equipment that can be connected to pipes of different sizes. For example the crossover might be 2� on one side and 4� on the other.
A method of gaining speed and turning corners in which skaters cross one foot over the other. There are both forward and backward crossovers.
Foot movement in which the skater crosses one foot over the other in order to gain speed and turn corners. This step can be done forwards and backwards.