Pocketbook dictionary from Kobo

I am awaiting a new Pocketbook InkPad Color 3 but I want to convert my Kobo Clara 2E dictionary to the Pocketbook format as the generic English dictionary is from 1913 which seems way out of date. Is it possible?
I've looked on this forum for any help but just ended more confused than enlightened. Any help/fuidance would be greatly appreciated/