Dactylus

noun

1. In zoology: In Crustacea, the last segment of the normally 7-jointed leg; a dactylopodite. It is the movable claw of the two that make the nipper or chelate claw.
2. In entomology, one or all of the tarsal joints which follow the first one in any insect, when, as in a bee, for example, the first joint is much larger than the rest and known as the metatarsus or planta.
3. In conchology, a piddock, Pholas dactylus.
4. In anatomy See digitus