(fiction) A genie who is imprisoned in a lamp, as in the tale of Aladdin. / (figuratively) A person who does what is bid, or is obliged to do as bid; something that dutifully performs virtually any task.

An incandescent light bulb in which the envelope is made of quartz instead of glass, and the filament is surrounded by an atmosphere of a halogen gas, usually iodine.

(American spelling) Alternative spelling of mercury-vapour lamp

A high-pressure discharge lamp that is enclosed in a quartz envelope containing metal halides (usually iodides), and produces high-efficacy white light.

(British spelling) a gaseous discharge lamp in which the arc discharge takes place in mercury vapour; used for highway illumination and as an industrial source of ultraviolet radiation

A small, low-wattage lamp used as an indicator or nightlight, typically consisting of a pair of electrodes sealed in a bulb containing neon at low pressure.

Alternative spelling of sodium vapor lamp

A street lamp in which electricity is passed through sodium vapour to emit a yellow light.

A lamp that produces a very short, but very intense, flash of white light; used in photography and in photocoagulation

A type of fluorescent lamp (that may or may not contain mercury).