< /əˈsɪk yə lə/.

  1. an acicula.
  2. Zoology. one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes.

noun plural -lae (-ˌliː)

  1. a needle-shaped part, such as a spine, prickle, or crystal

noun plural -lums or -la (-lə)

  1. a needle-like bristle that provides internal support for the appendages (chaetae) of some polychaete worms

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