Illyricum

Boyd’s Bible Dictionary:

(joy). A country on E. shore of Adriatic, N. of Macedonia. Reached by Paul (Rom. 15:19).

Concise Bible Dictionary:

An extensive region on the east coast of the Adriatic, to which the preaching of Paul extended (Rom. 15:19). It is now nearly all embraced under the name of Dalmatia.

Strong’s Dictionary of Greek Words:

Greek:
Ἰλλυρικόν
Transliteration:
Illurikon
Phonic:
il-loo-ree-kon’
Meaning:
neuter of an adjective from a name of uncertain derivation: (the) Illyrican (shore), i.e. (as a name itself) Illyricum, a region of Europe
KJV Usage:
Illyricum

Jackson’s Dictionary of Scripture Proper Names:

the lyric band (?)

Potts’ Bible Proper Names:

High; joy; rejoicing:―a Roman province on E. shore of Adriatic, Rom. 15:19. {Altus; gaudium; gaudens}