As we've already established, word "slave" in English comes from Slavs.
(Russians, Poles, Ukrainians, Czechs, Belarusians, Bulgarians, Serbs and Montenegryns, Croats, Bosnians, Slovakians, Slovenians, Macedonians, Rusyns and Lausitz people are all Slavs).
It comes from the times prior to...