Lewis & Short

hărundĭnĕus (ar-), a, um, adj. [harundo, II.].

  1. I. Of reeds, reedy: silva, Verg. A. 10, 710: paniculae, Plin. 8, 32, 50, § 117: cuneoli, Col. 4, 29, 10: ripae, Stat. Th. 6, 174.
    Poet.: carmen, a shepherd’s song, Ov. Tr. 4, 1, 12.
  2. II. Like a reed: radix, Plin. 24, 16, 93, § 150: mensura aurea, Vulg. Apoc. 21, 15.