Alternative term: Socket
A device into which the cap of a lamp is inserted, for holding it in position and usually connecting it with the electric supply.
Note 1: In English, when the context is clear, the abbreviation Holder is commonly used.
Note 2: See Note: to 2-3-110.
Reference: C.I.E. (modified)
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
Celsius (previously Centigrade)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM