Lewis & Short

convolvŭlus, i, m. [convolvo].

  1. I. A caterpillar that wraps itself up in a leaf, Gr. ἴψ, Cato, R. R. 95, 1; Plin. 17, 28, 47, § 264.
  2. II. A plant, bind-weed, Plin. 21, 5, 11, § 24.