At the end of the lunar month a thin crescent shows briefly in the west at dusk.
Tips
history
朓 is not used in modern Chinese. It is a specialised classical word for the thin moon seen in the west at the end of a lunar month, the opposite of 朒 (the moon seen in the east at month's start). It shares the 兆 phonetic with 跳.
register
Archaic and technical only, confined to old calendrical and astronomical texts, not in everyday speech.
