Fighting Back - Cloven Hoof album - was created in 1986.

Cloven hoof means split hoof so I would imagine cloven tongue means split tongue!

Hope this helps :)

Source:

R.S. lessons

A cloven hoof is a hoof that is split in the middle, like a cow, deer or a hog's hoof. An example of a unclovened hoof is a horses hoof, it is not split in the middle. If you read the Bible/Quran it says to only eat cloven hoofed animals, it is a sin to eat one that is unclovened.

Yes, cows have two toes on each leg and each toe has a hoof. This is referred to as a cloven hoof, in the old belief that the hoof had been split or cleaved from the single hoof of a horse or similar animal.

Cloven hoofed animals are pigs, oxen, cows, sheep, goats, deer, gazelles, and giraffes.