bàn​yuè

fortnight

半月 bàn​yuè
fortnight numeral
a period of half a month, typically about two weeks

He was away on a business trip for half a month before returning.

half-moon numeral
the moon as it appears when half its disk is illuminated; a semicircular shape

A bright half-moon hung in the night sky.

Frequency

Written text
7.94 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)