Awesome, thank you! Bit irritating of Gibbon not to anticipate internet search engine ambiguity.

In his History of the Decline and Fall of the Roman Empire, Gibbon writes ‘Dalmatia, to which the name of Illyricum more properly belonged, was a long, but narrow tract, between the Save and the Adriatic.’

“The Save” is decidedly difficult to Google. Can anyone tell me what he means? Thanks!