half-moon
/ˈhɑːfˈmuːn/noun
1- the moon when only half its illuminated surface is visible from the earth; the first or last quarter半月。
1.1
- the time when this occurs出现半月的时候。
1.2
- a semicircular or crescent-shaped object半月形：
as modifier half-moon spectacles.半月形眼镜。