yǔ​shū

urgent military dispatch

Senses

羽书/ 羽書 yǔ​shū urgent military dispatch

an urgent military message in ancient times, often marked with a bird feather to signal that it must be delivered at top speed

References

classifier 羽书/羽書 封/封
same_as 羽书/羽書 羽毛书/羽毛書
same_as 羽书/羽書 羽檄/羽檄
same_as 羽檄/羽檄 羽书/羽書