Answer: nanosecond

AnswerCrossword Clue
NANOSECONDSmall time
NANOSECONDInstant
NANOSECONDNot much time
NANOSECONDInstant feature of "banana nose" condition (10)
NANOSECONDTime in which light travels one foot, approximately
nanoseconda billionth of a second
nanosecondOne billionth of a second