A lamp with more than two nozzles was called a polymyxus. The number of nozzles was not limited however, those with only one hole have been more commonly found. Oil lamps were used by the Romans for mainly three reasons; to light private and public spaces, to give as offerings in temples and to the gods and to be placed within a grave or funerary context. As well as linear, geometric and circular designs, favourite subjects for decoration of oil lamps included gods and mythological scenes, scenes from everyday life, gladiatorial depictions, drawings relating to entertainment and theatre, and various animals, fish and birds.