IPA: /ˈmuːnˌsɛt/
KK: /ˈmunˌsɛt/
The time when the moon goes down and disappears below the horizon.
We watched the beautiful moonset from the beach.
Moonset → It is formed from "moon" (from Old English *mōna*, meaning the natural satellite of Earth) and "set" (from Old English *settan*, meaning to place or put down). The word "moonset" refers to the time when the moon descends below the horizon or is placed down in the sky.
Think of the moon being 'put down' or 'setting' below the horizon, which is what moonset means.