惜寸阴

to cherish every moment / to make good use of one's time

to cherish / to begrudge / to pity / Taiwan pr. [xi2]

a unit of length / inch / thumb

a very brief period of time (lit. the time it takes for a shadow to move an inch)

surname Yin

overcast (weather) / cloudy / shady / Yin (the negative principle of Yin and Yang) / negative (electric.) / feminine / moon / implicit / hidden / genitalia

variant of 陰|阴[yin1]