2. Wearing showy, counterfeit ornaments; vulgarly
pretentious; as, flash people; flash men or women; --
applied especially to thieves, gamblers, and prostitutes
that dress in a showy way and wear much cheap jewelry.
{Flash house}, a house frequented by flash people, as thieves
and whores; hence, a brothel. ``A gang of footpads,
reveling with their favorite beauties at a flash house.''
--Macaulay.