Green’s Dictionary of Slang

(UK Und.) a woman, spec. a prostitute; the antonym of jomer n.

1674		Head Canting Academy (2nd edn).
c.1698		B.E. Dict. Canting Crew.
1719		A. Smith Lives of Most Notorious Highway-men, etc. (1926) II.
1725		New Canting Dict.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict.
c.1750–1882		B.M. Carew Life and Adventures.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1839		H. Brandon Dict. of the Flash or Cant Lang. 161/2: Blower – a girl; a contemptuous name in opposition to a jomer.
1842		Whip & Satirist of NY & Brooklyn (NY) 23 Apr. n.p.: Danced by eight old blowers, under the superintendance of [...] the Temperance Society’.
c.1850		Duncombe New and Improved Flash Dict.
1856		Life in Boston & N.Y. (Boston, MA) 23 Aug. n.p.: Agnes R—r, an old blower of twenty years standing .
1857		in ‘Ducange Anglicus’ Vulgar Tongue.
1859, 1860		Hotten Dict. of Modern Sl. etc.
1865		Leaves from Diary of Celebrated Burglar 84/2: This accounted for seeing him ‘pratted’ between the brace of ‘blowers’ in Ned Langthorne’s.
1870		Hotten Sl. Dict.
1882		Sydney Sl. Dict. 10/2: I got the thimble to church and fenced it for three cooter, and four deaners for lush for the cross coves and their blowers. We went to the gaff that night and tried to work, but spied a keen-eyed cop marking, and we guyed.