Hebrews ner, Job 18:6; 29:3; Psalm 18:28; Proverbs 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 (Proverbs 20:27), of a Christian example (Matthew 5:14, 15), and of prosperity (Job 21:17; Proverbs 13:9).

Noah Webster's New International Dictionary of the English Language

1. (n.) A slender, cylindrical body of tallow, containing a wick composed of loosely twisted linen of cotton threads, and used to furnish light.

2. (n.) That which gives light; a luminary.