slang. Also blowing. A wench, trull.
1812. J. H. Vaux, Flash Dict., Blowen, a prostitute; a woman who cohabits with a man without marriage.
1823. Byron, Juan, XI. xix. With black-eyed Sal (his blowing).
1851. Kingsley, Yeast, xi. A short simple service that might catch the ears of the roughs and the blowens.