eighty

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eighty

1. the cardinal number that is the product of ten and eight
2. a numeral, 80, LXXX, etc., representing this number
3. the numbers 80-89, esp a person's age or the year of a particular century
4. the amount or quantity that is eight times as big as ten
References in classic literature ?
Passepartout was ignorant that, if the face of his watch had been divided into twenty-four hours, like the Italian clocks, he would have no reason for exultation; for the hands of his watch would then, instead of as now indicating nine o'clock in the morning, indicate nine o'clock in the evening, that is, the twenty-first hour after midnight precisely the difference between London time and that of the one hundred and eightieth meridian.
These bubbles are from an eightieth to an eighth of an inch in diameter, very clear and beautiful, and you see your face reflected in them through the ice.
I didn't object at first, but after about the eightieth child of sunny Italy had shown up it began to get on my nerves.