What is the meaning of 晦 in the phrase 韬光养晦? I find the phrase 韬光养晦 in a context,and I look up it in the dictionary,it means hidden talents, do not make the leakage.But I still don't know the meaning of 晦.
晦 means some place which is dark.

韬光养晦 means hide one's talent and keep a low profile