Bible Dictionaries
Napier's Rods

Webster's Dictionary

A set of rods, made of bone or other material, each divided into nine spaces, and containing the numbers of a column of the multiplication table; - a contrivance of Baron Napier, the inventor of logarithms, for facilitating the operations of multiplication and division.

Bibliography Information
Webster, Noah. Entry for 'Napier's Rods'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​n/napiers-rods.html. 1828.