1-6 core per CPU

Any expert out there to explain the terminology used in Vmware language:

it says one single server can use 1-6 cores per CPU.

If I understand, a core is just a block, for instance, when we say :
Dual core processor= one block that has 2 processors inside
Quadro core processor=one block that has 4 processors inside.

I don't think :
1-6 cores per CPU means one block can have 1 to 6 CPUs inside.

any clarifications?

thanks