下旬

下旬	xià xún	last third of the month
下	xià	down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action
旬	xún	(bound form) ten-day period; one of the three ten-day divisions of a month (e.g. 上旬) / (bound form) ten years (in age expressions, e.g. 六旬 "sixty years old")