A number equal to eight times twenty, totaling one hundred sixty (archaic usage).
From 'eight' plus 'score' (an old English word meaning twenty, from Old Norse 'skor'). 'Score' was used extensively before the modern decimal system.
Before numbers became standardized, people counted in 'scores'—Abraham Lincoln's famous speech began 'Four score and seven years ago' (87 years), showing how this system was still used in the 1800s!
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