1. An apparatus in which a gas or vapour burns to produce a flame used directly or with a mantle as a source of light.
2. That part of the apparatus where the flame is produced. (Figs. 20 and 21)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM