For instance, we feel like we have an open running tab, and until things come to a close we don't know what the ultimate financial damage will be. (law.stackexchange.com)
For example, a local cellular provider in my hometown frequently runs a tab for a couple hours for Starbucks customers in its local market. (entrepreneur.com)
Everybody runs a tab, and the bookie establishes a limit at which he must pay off the bettor's winnings or the gambler must pay off his losses. (si.com)