/dij"it/ , n.
1. a finger or toe.
2. the breadth of a finger used as a unit of linear measure, usually equal to ¾ in. (2 cm).
3. any of the Arabic figures of 1 through 9 and 0.
4. any of the symbols of other number systems, as 0 or 1 in the binary.
5. index (def. 6).
6. Astron. the twelfth part of the sun's or moon's diameter: used to express the magnitude of an eclipse.
[ 1350-1400; ME digitus finger, toe ]