Green’s Dictionary of Slang

a favoured costermongers’ hairstyle, consisting of a well-greased lock of hair twisted and pointing either at the corner of an eye or at an ear.

1835		Dickens in Bell’s Life in London 4 Oct. 1/1: His hair carefully twisted into the outer corner of each eye, till it formed a variety of that description of semi-curls, usually known as ‘haggerawators’.
1859		F. Fowler Southern Lights and Shadows 38: The ladies [...] are addicted to [...] trained hair, embellished with two or three C’s – aggravators they call ’em – running over the temple .
1860		Hotten Dict. of Modern Sl. etc. (2nd edn) 89: aggerawators (corruption of Aggravators), the greasy locks of hair in vogue among costermongers and other street folk, worn twisted from the temple back towards the ear.
1861		R.F. Burton City of the Saints 29: His locks, whose ends are cuffled inwards, with a fascinating sausage-like roll not unlike the cockney ‘aggrawator.’.
1862		Northern Whig (Antrim, N. Ireland) 18 Oct. 3/4: Those horible youths [...] with greasy caps and the Aggerawator curls, the low foreheads and the flattened noses, ‘roughs’ who are the real scum of a London mob.
1863		Middlesex Chron. 7 Nov. 6/3: London cad with his seedy second-hand clothes, his shiny, broken hat, his never-absent ‘aggerawator’ side curl.
1870		Hotten Sl. Dict.
1885		Bulletin (Sydney) 2 May 10/4: [He] got up in tight pants, a shiny bell-topper worn well over the left eye, a red tie with a brass pin, and lots of well-greased hair twisted into ‘curls’ at the back and trained as ‘aggerawaters’ round the ears in front.
1889		Dead Bird (Sydney) 10 Aug. 4/2: Blucher boots, whose polish emulated the oleaginous glean of his ‘aggravators’.
1909		J. Ware Passing Eng. of the Victorian Era 3/2: Aggeravators, Hagrerwaiters (Costermongers). Side-curls still worn by a few conservative costermongers. Of two kinds – the ring, or ringlet (the more ancient), and the twist [...] The aggravation may mean that these adornments excite envy in those who cannot grow these splendours, or that they aggravate or increase the admiration of the fair sex.