1A person who or thing which aggravates.
2 slang, historical A greased lock of hair, especially one worn over the temple or forehead. Compare "lovelock", Newgate knocker .
Aggravators were fashionable in England during the early Victorian period.
Late 16th century; earliest use found in John Florio (1553–1625), author and teacher of languages. From aggravate + -or, originally after Italian gravatore.