jiffy englanniksi - Sanakirja.org (englanti-englanti)

(colloquial) A very short, unspecified length of time.
(computing) A unit of time defined by the frequency of its basic timer; historically, and by convention, 0.01 seconds, but some operating systems use other values.
(electronics) The length of an alternating current power cycle (1/60 or 1/50 of a second)
(physics) The time taken for light to travel one centimetre in a vacuum (sometimes one foot, or sometimes the width of a nucleon)

Old Applegate, in the stern, just set and looked at me, and Lord James, amidship, waved both arms and kept hollering for help. I took a couple of everlasting big strokes and managed to grab hold of the skiff's rail, close to the stern. Then, for a jiffy, I hung on and fought for breath.
I'll be back in a jiffy.

Monikko