What is the meaning of Cross_country?

A running sport popular in US high schools, colleges, etc., where participants race over varying terrain (e.g. golf courses, roads, etc.) in approximately 5- to 10-kilometre races. Abbreviated XC.

A phase of the equestrian sport of three day eventing, which the horse and rider travel over varied terrain and jump natural obstacles.

Flight between two points or aerodromes using navigational techniques.

Source: wiktionary.org