jiffy

A short space of time; a moment. synonym: moment.

A moment; an instant: as, I shall be with you in a jiffy.

A moment; an instant.

A very short, unspecified length of time.

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.

The time between alternating current power cycles (1/60 or 1/50 of a second)

The time taken for light to travel one centimetre in a vacuum (sometimes one foot, or sometimes the width of a nucleon)

a very short time (as the time it takes the eye to blink or the heart to beat)