The V'draysh was a spacefaring group that had been at war for at least ten years, about a millennium after Discovery's abandonment by its crew. Craft, a Human from Alcor IV, was a soldier fighting against the V'draysh.
The V'draysh employed escape pods, one of which was stolen by Craft, that used Human's English language computer displays. V'draysh weapons could produce pulse burns.
The V'draysh valued relics from the Long Ago, an era which included the film Snow-White, a Betty Boop cartoon of pre-warp Earth. (ST: "Calypso")
Zareh used the term "V'draysh" in connection with Starfleet in 3189. (DIS: "Far From Home")
The writer of "Calypso", Michael Chabon, confirmed on Instagram that "V'draysh" is a syncope (a type of linguistic distortion) of the word "Federation". 
Since Zareh and his men spoke Pidgin
, it is possible that the syncope "V'draysh" is meant to be a Pidgin word.