Aculeus

//əˈkjuː.lɪ.əs// noun

Definitions

Noun
  1. 1
    A sharp spike or other projection growing on a plant, as in some brambles and roses.

    "Many plants, like many animals, are furnished with arms for their protection; these are either aculei, prickles, as in rose and barberry, which are formed from the outer bark of the plant; or spinæ, thorns […]."

  2. 2
    a sharp-pointed process especially a sting of a hymenopterous insect wordnet
  3. 3
    A sting.
  4. 4
    a stiff sharp-pointed plant process wordnet

Etymology

From Latin aculeus.

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