Lewis & Short

tŏrŭlus, i, m. dim. [torus; a little ele vation; hence],

  1. I. A tuft of hair: tum meo patri autem torulus inerit aureus Sub petaso, Plaut. Am. prol. 144; so, torulo capiti circumflexo, Amm. 29, 1, 31: torulus in capite mulieris ornatus, Varr. L. L. 5, § 167 Müll.
  2. II. The (dilated) muscle, the brawn or fleshy part of the body: terga pulposis torulis obesa, App. M. 7, p. 195, 12.
    1. B. Transf., the sap-wood, alburnum of a tree, Vitr. 2, 9, 3.