thyrsi

/TH AY1 R S IY0/
noun
  1. 1

    A staff topped with a conical ornament, carried by Bacchus or his followers.

  2. 2

    A species of inflorescence; a dense panicle, as in the lilac and horse-chestnut.

Source: https://en.wiktionary.org/wiki/thyrsi, https://en.wiktionary.org/wiki/thyrsus