#1 digit n. [figure] one of the elements that collectively form a system of numeration; "0 and 1 are digits". wn
#2 digit n. [finger, fingerbreadth, finger's breadth] the length of breadth of a finger used as a linear measure. wn
#3 digit n. [dactyl] a finger or toe in human beings or corresponding body part in other vertebrates. wn
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