Thyrsus

Webster's Dictionary

(1): ( n.) A species of inflorescence; a dense panicle, as in the lilac and horse-chestnut.

(2): ( n.) A staff entwined with ivy, and surmounted by a pine cone, or by a bunch of vine or ivy leaves with grapes or berries. It is an attribute of Bacchus, and of the satyrs and others engaging in Bacchic rites.

The Nuttall Encyclopedia

An attribute of Dionysus, being a staff or spear entwined with ivy leaves and a cone at the top; carried by the devotees of the god on festive occasions; the cone was presumed to cover the spear point, a wound from which was said to cause madness.