Candle

Heb. ner, Job 18:6; 29:3; Psalms 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).

Source: Easton's Bible Dictionary
Candle

CANDLE, n.

1. A long, but small cylindrical body of tallow, wax or spermaceti, formed on a wick composed of linen or cotton threads, twisted loosely; used for a portable light of domestic use.
2. A light.
3. A light; a luminary. In scripture, the candle of the Lord is the divine favor and blessing, Job 14. 3.; or the conscience or understanding. Prov. 20:27.

Excommunication by inch of candle, is when the offender is allowed time to repent, while a candle burns, and is then excommunicated.

Sale by inch of candle, is an auction in which persons are allowed to bid, only till a small piece of candle burns out.

Medicated candle, in medicine, a bougie.

Rush-candles are used in some countries; they are made of the pith of certain rushes, peeled except on one side, and dipped in grease.

Source: King James Dictionary