saltire
noun [ C ] uk/ˈsɒl.taɪər/ us/ˈsɑːl.tɪr/
（旗帜等上的）X字形十字
a diagonal X-shaped cross, for example on a flag
the Saltire 苏格兰国旗（蓝色底上一个白色X字形十字）
the flag of Scotland, a white X-shaped cross on a blue background
The building permanently flies the Saltire. 这座建筑上永远飘扬着苏格兰旗。