Carcel \Car"cel\, n. (Photom.) A light standard much used in France, being the light from a Carcel lamp of stated size and construction consuming 42 grams of colza oil per hour with a flame 40 millimeters in height. Its illuminating power is variously stated at from 8.9 to 9.6 British standard candles.

Source: Webster's Revised Unabridged Dictionary (1913)