'Jiffy' definitions:

Definition of 'jiffy'

(from WordNet)
noun
A very short time (as the time it takes the eye to blink or the heart to beat); "if I had the chance I'd do it in a flash" [syn: blink of an eye, flash, heartbeat, instant, jiffy, split second, trice, twinkling, wink, New York minute]

Definition of 'Jiffy'

From: GCIDE
  • Jiffy \Jif"fy\, n. [Perh. corrupt. fr. gliff.] [Written also giffy.] A moment; an instant; as, I will be ready in a jiffy. [Colloq.] --J. & H. Smith. [1913 Webster]

Synonyms of 'jiffy'

From: Moby Thesaurus