Lucas
The name Lucas means “Lucius, luminous; white”.
Easton's Bible Dictionary 1897
A friend and companion of Paul during his imprisonment at Rome; Luke (q.v.), the beloved physician (Philemon 1:24; Col. 4:14).
Smith's Bible Dictionary 1863
(Philemon 1:24) [Luke]
International Standard Bible Encyclopedia 1915
lu'-kas, loo'-kas. In Phm 1:24 the King James Version, for "Luke" (Revised Version).