n. A unit of linear measure; a finger-breadth; a digit: used in reference to Greek, Egyptian, and Babylonian measures.n. In prosody, a foot of three syllables, the first long, the second and third short.n. In anatomy: A digit, whether of the hand or foot; a finger or a toe.n. A toe or digit of the hind foot only, when the word digit is restricted to a finger.n. In zoology, a dactylus.n. The piddock, Pholas dactylus. See dactylus .—To move nimbly; leap; bound.n. In Greek antiquity, a mythological creature supposed to have the secrets of fire and of iron-working.