digit

1. A position in a sequence of numerals representing a place value in a positional number system. · The base-10 number 123.4 has four digits: the hundreds digit is 1, the tens digit is 2, the units digit is 3, and the tenths digit is 4.
2. A distinct symbol representing a natural number in a positional number system.
3. ¹⁄₁₂ the apparent diameter of the sun or moon, (chiefly) as a measure of the totality of an eclipse. · A six-digit eclipse covers half the lunar surface.
4. A unit of length notionally based upon the width of an adult human finger, standardized differently in various places and times, (especially) the English digit of ¹⁄₁₆ foot, now equivalent to about 1.9 cm.
5. A narrow extremity of the human hand or foot: a finger, thumb, or toe.
6. Similar or similar-looking structures in other animals.
7. Synonym of manicule.

Plural digits