bence değil.
ağaçtan ayrılan manasında.
ama yokmuş
www.etymonline.comburda başka dimişler
From Proto-Germanic *lauban, perhaps from Proto-Indo-European *leup- (“to peel, break off”). Cognate with Old Saxon lōf (Dutch loof), Old High German loup (German Laub), Old Norse lauf (Danish løv, Swedish löv), Gothic