n. A finger or toe; in the plural, the third segment of the hand (manus) or foot (pes), consisting of the fingers or toes, each of which has usually three, sometimes two, occasionally one, and rarely more than three, joints or phalanges.n. A fingerbreadth; a dactyl; one fourth of a palm: a measure of length. The Roman digit was 18.5 millimeters or 0.73 of an English inch. See dactyl and fingerbreadth.n. In astronomy, the twelfth part of the diameter of the sun or moon: used in expressing the quantity of an eclipse: as, an eclipse of six digits (one which hides one half of the diameter).n. One of the first nine numbers, indicated by the fingers in counting on them; also, one of the nine Arabic numerals, 1, 2, 3, 4, 5, 6, 7, 8, 9.To point at or out with the finger.