When I lived in Corpus Christi, circa 1960, there were two supermarkets nearby: a Handy Andy and a Jitney Jungle. No sign of Andy lately, but Jitney Jungle made it to Wikipedia, and with it, an explanation of the name:
The naming process began during a Sunday dinner at the home of Judge V. J. Stricker, a close friend of the [founding] families. The “Jitney” in the title was a popular name for the cut-rate five-cent taxis of that day, many of which were operated by returning veterans. It would be jitneys that would carry many of the cash customers to the store and back. Jitney was also a slang term for a nickel. That fitted in with the “nickel on a quarter” that the customer would save by patronizing the self-service store. Also, a popular expression of that time had to do with “jingling your jitneys in your pockets.” Thus, Judge Stricker ventured the name Jitney-Jingle. There is a legend that “Jingle” got to be “Jungle” by virtue of a printer’s error in the first advertisement. Rather it was a play on words by Mr. Will McCarty. Every Jitney would be a jungle of bargains that could save the customer a “jitney” on a quarter.”
I have no idea what’s in that space on South Staples Street today.