cross·ing 
(krôsĭng, krŏsĭng)
(krôsĭng, krŏsĭng)n.
1. The act or action of crossing.
2.
a. A place at which roads, lines, or tracks intersect; an intersection.
b. A place at which a river, railroad, or highway, for example, may be crossed: a railroad crossing; a pedestrian crossing.
3. The intersection of the nave and transept in a cruciform church.
4. Biology The process of crossbreeding; hybridization.