Lewis & Short

Leucŏnĭcus, a, um,

  1. I. adj., of or belonging to the Leucŏnes (a people in Gaul), Leuconic: lanae, Mart. 11, 56, 9 dub.: sagae, id. 14, 159, 2, also dub.
  2. II. Subst.: Leucŏ-nĭcum, i, n., Leuconic wool, Mart. 11, 21, 8.