出典:Wiktionary
Via Latin from Ancient Greek Σήνωνες (Sḗnōnes), originally the capital of the Gaulish people of the same name.
From Ancient Greek Σένονες (Sénones), also found as Σήνωνες (Sḗnōnes), from Gaulish Senones, from Proto-Celtic *senos (“old”).[1]