jitterbug
n.— «“Bojack” started robbing parking meters as a 10-year-old; by age 16, he was “a bona-fide ‘jitterbug’—the first lieutenant and known warlord of a very large gang.”» —“On the Edge’ of oblivion: the forecast for the nation’s poor black children” by Renee Graham Boston Globe Dec. 12, 1993. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...
A flashlight doesn’t flash. It provides a steady beam of light. So why is it called a flashlight? The earliest versions lit up only briefly before the batteries gave out and required a recharge, so they were literally “flash lights...