Lewis & Short

† tŏnus, i, m., = τόνος.

  1. I. The stretching, straining of a rope: mollior, vehementior, Vitr. 10, 10, 6.
  2. II. Trop.
    1. A. Lit., the sound, tone, of an instrument, Vitr. 5, 4; Macr. Somn. Scip. 2, 1 med.; Mart. Cap. 9, § 959.
      Of the tone of a syllable, accent, Nigid. ap. Gell. 13, 25, 1 sq.
    2. B. Transf.
      1. 1. Like our tone, in painting, of the natural color of an object, Plin. 35, 5, 11, § 29.
      2. 2. For tonitrus, thunder, Sen. Q. N. 2, 56, 1.