top hatting
n.— «The long-term goal of the unit is to be involved in the handling of crimes peculiar to the gambling industry as a whole. Examples of these would be late betting, top hatting, theft of credit cards from slot machines and theft of jackpot cups.» —“Stopping Illegal Gambling May Net Gauteng Millions” by Tefo Mothibeli Business Day (South Africa) Apr. 27, 2000. (source: Double-Tongued Dictionary)