Dill is a short-lived, European, annual herb. Both the fern-like leaves and the seed are used.
Both the seeds and the leaves are commonly used to flavor cucumber pickles.
Dill is not simply a herb; it is believed by some to have magic power. Roman gladiators are said to have anointed themselves with dill oil before their fights. Superstitious people believe that a bunch of dill hung above the doorway to one's house wards off evil spirits. In England it is said that dill protects from bedevilment, as is revealed in the saying: "Vervain and dill hinder witches from their will."