blink of an eye

English Thesaurus

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

hypernym	:	bit, minute, mo, moment, second,
definition	:	an indefinitely short time (noun.time)

derivation	:	flash,
definition	:	expose or show briefly (verb.perception)

derivation	:	flash,
definition	:	expose or show briefly (verb.perception)