Easton's Bible Dictionary (1897)
Heb. ner, Job 18:6; 29:3; Ps. 18:28; Prov. 24:20, in all which places the Revised Version and margin of Authorized Version have “lamp,” by which the word is elsewhere frequently rendered. The Hebrew word denotes properly any kind of candle or lamp or torch. It is used as a figure of conscience (Prov. 20:27), of a Christian example (Matt. 5:14, 15), and of prosperity (Job 21:17; Prov. 13:9).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
CAN'DLE . Job 18:6. Often used figuratively to denote light generally. See Lamp.