下弦

下弦	xià xián	last quarter, aka third quarter (phase of the moon)
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
弦	xián	bow string / string of musical instrument / watchspring / chord (segment of curve) / hypotenuse / CL:根