(Latin: taper)

The base unit of luminous intensity in the International System of Units that is equal to the luminous intensity in a given direction of a source which emits monochromatic radiation of frequency and has a radiant intensity in that direction of watt per unit solid angle; abbreviation cd and also called a candle.
candle (s) (noun), candles (pl)
1. A molded piece of wax, tallow, or other fatty substance, usually cylindrical in shape, encasing a wick that is burned to provide light: Before the days of gas and electricity, candles were the main sources of light at night.
2. A unit of luminous intensity, defined as a fraction of the luminous intensity of a group of 45 carbon-filament lamps; used from 1909 to 1948 as the international standard.
3. Etymology: from Ole English candel, early church-word borrowing from Latin candela, "a light, a torch"; from candere, "to shine".

Candles were unknown in ancient Greece where oil lamps were used, but they were common from early times among Romans and Etruscans.

candle light
1. The light that a burning candle provides.
2. Illumination from a candle or candles.
3. Dusk; twilight; the time to light a candle.
candlepower, candle power
Luminous intensity measured in candelas.
Someone who examines by holding between the eye and a light; especially, to test (eggs) in this way for staleness, blood clots, fertility, and growth.
footcandle, foot candle
Illumination or brightness equivalent to one lumen per square foot; replaced in the SI system by the candela; or the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency.