cross·ing / ˈkrôsing/ • n. 1. a place where two roads, two railroad lines, or a road and a railroad line cross. ∎  the action of moving across or over something. ∎  a journey across water in a ship. ∎  a place at which one may safely cross something, esp. a street. ∎  a place at which one can cross a border between countries. ∎  Archit. the intersection of a church nave and the transepts.2. crossbreeding.

crossing. Volume formed on a square plan by the intersection of chancel, nave, and transepts of a cruciform church, often with a tower, flèche, or other architectural feature, such as a cupola, over it.