A very short amount of time. Used especially in the phrase "in a jiffy," meaning immediately, very quickly, or at once. Just call us on this number if you have any problems, and we'll be back in a jiff. I'll pop the hood and have a look at the engine. It should only take a jiff.
See also: jiff
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.