Calacirian
From Tolkien Gateway
Calacirian is a region of Eldamar in an near the entrance to the ravine of Calacirya. The name appears in Bilbo's song (Eärendil was a mariner) in Rivendell:
- and seven lights before him sent,
as through the Calacirian
to hidden land forlorn he went.
The name Calacirian is actually an anlicized form of Kalakiryan(de), derived from Kalakirya.
Sources: The Lord of the Rings I, Book 2, Chapter 1; The Road Goes Ever On, p. 70 (2nd ed. 1978).