Mokosh?

I have been attempting to do some research into some of the names
found in Vladimirs pantheon......Perun and Dazbog were easy but I am
coming up with nothing so concrete on some of the others.

Mokosh for instance. I am assuming it is related to proto-slavic mokrú
but in checking over the archives of the cybalist is see someone
mentioning that the -kosh part of the name had to do with transport or
carraige. Am I going about this wrong? Does anyone have any clues as
to the etymology of this name?

TIA
Ken