Lu'cas (Δουκᾶς,Vulg. Lucas), a friend and companion of Paul during his imprisonment at Rome (Phm 1:24). A.D. 57. He is doubtless the same as Luke, the beloved physician, who is associated with Demas in Col 4:14, and who remained faithful to the apostle when others forsook him (2Ti 4:11), on his first examination before the emperor. For the grounds of his identification with the evangelist Luke, SEE LUKE.