Even if the word “islam” really did mean “peace” it would be deceptive advertising on a cosmic scale.
Interesting that the great historical hero of Islam, Saladin (1137 to 1193) held the same religious ideals as does ISIS. He held the same national and world views. There is nothing new but still critically dangerous to all non believers.
It would be kind of like call a fat person slim or a tall person shorty.