Very short time (5)
(Other definitions for jiffy that I've seen before include "Very short moment - type of bag" , "Moment (slang)" , "Split second" , "Two shakes of a lamb's tail?" , "An instant" .)
'very short time' is the definition.
(second is a unit of time)
This is the entire clue.
(Other definitions for second that I've seen before include "Small fraction of a day" , "Short-lived" , "Eighty six thousand and four hundredth of a day" , "tick" , "Further opportunity" .)
'very short time' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for jiff that I've seen before include "Second" , "Two shakes" , "Instant (sl)" , "A mo" .)