D defs.my
Entry 1 sense Webster, 1913

Nero

/(nē"rō̇)/ · Ne·ro · IPA /ˈniːroʊ/
01 prop. n. A Roman emperor notorious for debauchery and barbarous cruelty; hence, any profligate and cruel ruler or merciless tyrant.
  1. 1.
    A Roman emperor notorious for debauchery and barbarous cruelty; hence, any profligate and cruel ruler or merciless tyrant.