It meant it dipped below $6k for the very first time since October 2017. Cumulatively, BTC has lost 70% of its value in 2018 and the peak of $20k on December 17 is just but a stat now.
Maybe the value of bitcoin nowadays is in dip position but it is not necessarily that bitcoin is dead. There are many consideration to tell that the bitcoin is dead. First, communtiy support, as long as investor and community continue believing and support it, bitcoin is still usable and valueble. Second, the volume of bitcoin in the market cap. Nowadays the volume of bitcoin in the market cap is still huge and the value is slighly recover. And, so on......