Lewis & Short

Thūlē (Thȳlē), ēs, f., = Θούλη or Θύλη, an island in the extreme nortl of Europe; acc. to some, Iceland; acc. to others, Mainland (the largest of the Shetland lslands), Mel. 3, 6, 9; Plin. 2, 75, 77, § 187; 4, 16, 30, § 104; 6, 34, 39, § 220; Tac. Agr. 10; Stat. S. 3, 5, 20; 4, 4, 62; Claud. III. Cons. Hon. 53.