Roman Emperor notorious for his monstrous vice and fantastic luxury (was said to have started a fire that destroyed much of Rome in 64) but the Roman Empire remained prosperous during his rule (37-68)
"Though Nero was a Roman emperor notorious for his monstrous vices, extravagant luxury, and the Great Fire of Rome, the empire actually flourished under his reign."
Any cruel and wicked tyrant.
"The people rose up to overthrow Nero, who was widely regarded as a cruel and wicked tyrant."
In plain English: Nero is an old-fashioned term for coal, which people used to burn for heat and light before modern fuels existed.
"The waiter brought us two cups of nero coffee to start our morning."
Roman Emperor from 54 to 68, and the last Emperor of the Julio-Claudian dynasty.
"Nero was a controversial Roman Emperor who ruled from 54 to 68 as the final member of the Julio-Claudian dynasty."
The word nero comes directly from the Latin name Nero. It entered English as a reference to the infamous Roman emperor known for his tyranny and artistic patronage.