Socket/ˈsɑːkɪt/ Definition 1 of 4Pro Tip 1/3Electricity Source Refers to a point where electrical devices connect to a power supply. Make sure the electric kettle's cord reaches the kitchen socket. Pro Tip 2/3Safety Precaution Used cautiously to avoid electrical shock or fire hazards. Children are taught not to play with wall sockets. Pro Tip 3/3Plug Compatibility Must match the plug's shape and voltage to function properly. The US socket does not fit European plugs without an adapter.