缩阴

缩阴	suō yīn	to make the vagina tighter
缩	suō	to withdraw / to pull back / to contract / to shrink / to reduce / abbreviation / also pr. [su4]
阴	Yīn	surname Yin
阴	yīn	overcast (weather) / cloudy / shady / Yin (the negative principle of Yin and Yang) / negative (electric.) / feminine / moon / implicit / hidden / genitalia
阴	yīn	variant of 阴