Lewis & Short

2. Lycīum (less correctly Lycēum, v. Ellendt ad Cic. de Or. 1, 21, 98), i, n., = Λύκειον,

  1. I. a gymnasium very near Athens, in which Aristotle taught, Cic. de Or. 1, 21, 98; id. Ac. 1, 4, 17; id. Div. 1, 13, 22; Liv. 31, 24, 18; Gell. 20, 5, 4.
  2. II. Transf.
    1. A. The upper gymnasium of Cicero’s Tusculan villa, with a library in it, Cic. Div. 1, 5, 8; 2, 3, 8.
    2. B. A gymnasium of the emperor Hadrian at his Tiburtine villa, Spart. Hadr. 27.