socket

noun
UK /ˈsɒkɪt/
US /ˈsɑːkɪt/

A socket is a hole that holds something, like a plug or a light bulb.

She plugged the lamp into the socket on the wall.


OTHER MEANINGS

2. A hollow part in a bone where another bone fits.

The hip socket holds the top of the thigh bone.

3. A place on a computer or device where you plug in a cable or part.

He put the memory chip into the socket on the motherboard.

4. A part of a tool that holds another part firmly.

The mechanic fit a new wrench head into the socket.