Meaning of SOCKET in English
A ~ is a device on a piece of electrical equipment into which you can put a bulb or plug.
A ~ is a device or point in a wall where you can connect electrical equipment to the power supply. (BRIT; in AM, use outlet )
You can refer to any hollow part or opening in a structure which another part fits into as a ~.
Her eyes were sunk deep into their ~s.
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012