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bayonet socket[¦bā·ə′net ¦säk·ət]
A socket, having J-shaped slots on opposite sides, into which a bayonet base or coupling is inserted against a spring and rotated until its pins are seated firmly in the slots.
bayonet holder, bayonet socket
A type of lamp holder which provides mechanical support and electric connections for an electric light bulb; esp. used in Great Britain.