Strong’s Greek
G2437 — Illurikon
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
Ἰλλυρικόν
Illurikon — pronounced il-loo-ree-kon'
neuter of an adjective from a name of uncertain derivation: (the) Illyrican (shore), i.e. (as a name itself) Illyricum, a region of Europe:--Illyricum.
1 occurrence in the KJV.
Romans 15:19
Through mighty signs and wonders, by the power of the Spirit of God; so that from Jerusalem, and round about unto Illyricum, I have fully preached the gospel of Christ.