半老徐娘

半拉子

Literally means:

a middle-aged woman still with feminine charm

Actually means:

It refers to a woman who has passed her prime time, but still remains graceful. It sometimes means a middle-aged woman who would take advantage of her remaining charm to impose influence on others. It carries a disrespectful tone, thus it cannot be used as a form of address.

指已经进入中年但还有一定风韵（即风度或情趣）的妇女。有时可指利用自己仍然存在的风韵施加影响的中年妇女。含有不敬或轻薄的意味，不能用作当面的称呼。