A thyrsus or thyrsos was a wand or staff of giant fennelcovered with ivy vines and leaves, sometimes wound with taeniae and topped with a pine cone or by a bunch of vine-leaves and grapes or ivy-leaves and berries.
Symbolism
The thyrsus, associated with Dionysus and his followers, the Satyrs and Maenads, is a symbol of prosperity, fertility, hedonism, and pleasure/enjoyment in general. The thyrsus was tossed in the Bacchic dance:
Pentheus: The thyrsus— in my right hand shall I hold it? Dionysus: In thy right hand, and with thy right foot raise it".
Sometimes the thyrsus was displayed in conjunction with a kantharoswine cup, another symbol of Dionysus, forming a male-and-female combination.
Use
In Greek religion, the staff was carried by the votaries of Dionysus. Euripides wrote that honey dripped from the thyrsos staves that the Bacchic maenads carried. The thyrsus was a sacred instrument at religious rituals and fêtes. The fabulous history of Bacchus relates that he converted the thyrsi carried by himself and his followers into dangerous weapons, by concealing an iron point in the head of leaves. Hence his thyrsus is called "a spear enveloped in vine-leaves", and its point was thought to incite to madness.
He it was that/drove the nursing women who were in charge/of frenzied Bacchus through the land of Nysa,/and they flung their thyrsion the ground as/murderous Lycurgus beat them with his ox-/goad.
The thyrsus is explicitly attributed to Dionysus in Euripides's play The Bacchae as part of the costume of the Dionysian cult.
...To raise my Bacchic shout, and clothe all who respond/ In fawnskin habits, and put my thyrsus in their hands–/ The weapon wreathed with ivy-shoots..." Euripides also writes, "There's a brute wildness in the fennel-wands—Reverence it well."
I conceive that the founders of the mysteries had a real meaning and were not mere triflers when they intimated in a figure long ago that he who passes unsanctified and uninitiated into the world below will live in a slough, but that he who arrives there after initiation and purification will dwell with the gods. For "many," as they say in the mysteries, "are the thyrsus bearers, but few are the mystics,"--meaning, as I interpret the words, the true philosophers.
In Part II of Johann Wolfgang von Goethe's Faust, Mephistopheles tries to catch a Lamia, only to find out that she is an illusion:
Well, then, a tall one I will catch.../And now a thyrsus-pole I snatch!/Only a pine-cone as its head.
Robert Browning mentions the thyrsus in passing in The Bishop Orders His Tomb at St Praxed's Church, as the dying bishop confuses Christian piety with classical extravagance. Ovid talks about Bacchus carrying a thyrsus and his followers doing the same in his Metamorphoses Book III, which is a retelling of The Bacchae.
The bas-relief in bronze ye promised me,/Those Pans and nymphs ye wot of, and perchance/Some tripod, thrysus, with a vase or so,
