Lewis & Short

errātĭcus, a, um, adj. [erro], wandering to and fro, wandering about, roving, erratic (mostly ante-class. and post-Aug.).

  1. I. In gen.: stellae, planets, Auct. ap. Gell. 3, 10, 2; 14, 1, 11; 18; Sen. Q. N. 7, 23: Delos, Ov. M. 6, 333: homo, Gell. 9, 2, 6: sanguis, i. e. herpetic, Plin. 26, 13, 84, § 136; cf. transf.: vitis serpens multiplici lapsu et erratico, * Cic. de Sen. 15, 52.
  2. II. Esp. in botany, of plants that spring up here and there wild, i. q. silvestris, wild: brassica, Cato R. R. 157, 12; Plin. 20, 9, 36, § 92: cucumis, id. 20, 2, 4, § 9: intubum, id. 19, 8, 39, § 129: salix, Vitr. 8, 1.