"Orange" is the Engpsh word for "橘子".

Its origin comes from the Sanskrit word "naranga", which was later adapted into Persian as "narang". From Persian, it was borrowed into Arabic as "naranj", and from Arabic into Old French as "oranje". The Modern French word for orange is "orange", which was eventually adopted into Engpsh.

Examples:

I ate an orange for breakfast. (我早餐吃了一个橘子)
The color of the walls was a bright orange. (墙壁的颜色是一种明亮的橙色)
The fruit market had a large selection of oranges. (水果市场有大量的橘子)