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lampholder
holder, <of an electric lamp>
device that holds the electric lamp in position, usually by having the cap inserted in it, in which case it also provides the means of connecting the electric lamp to the power supply
Note 1 to entry: This entry was numbered 845-08-24 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-639 in CIE S 017:2011.