Sabine word for 'Strong and Energetic'.Source The Twelve Caesars by Seutonius, Book III Tiberius, at end of first paragraph in his discussion of the Claudian House (Pengiun Classics 16th anniversary edition translation)
The name "Nero" was actually an ancient Sabine name that meant "strong and energetic", and was absorbed into Latin after the Romans conquered central Italy in 290 BCE.