An oil lamp is any vessel that holds oil and an absorbent wick and produces continuous heat or light when lit. The most basic oil-lamp form—a shallow dish filled with oil or grease and a partially submerged wick or rag—was used from biblical times to the Victorian era. Do-it-yourself "slut lamps" could be made by dipping a rag in fat or lard, stuffing it into a bottle mouth, and lighting it. The term "slut lamp" eventually became synonymous...Continue Reading