socket

Từ điển Oxford Advanced Learner 8th

socket [socket sockets socketed socketing] BrE [ˈsɒkɪt] NAmE [ˈsɑːkɪt] noun
1. (also ˈpower point) (both BrE) (NAmE out·let, re·cep·tacle)a device in a wall that you put a plug into in order to connect electrical equipment to the power supply of a building
•a wall socket
2. a device on a piece of electrical equipment that you can fix a plug, a light ↑bulb, etc. into
•an aerial socket on the television
3. a curved hollow space in the surface of sth that another part fits into or moves around in
•His eyes bulged in their sockets.
•The dog nearly pulled my arm out of its socket.
See also: ↑outlet ▪ ↑power point ▪ ↑receptacle

Word Origin:
Middle English (in the sense ‘head of a spear, resembling a ploughshare’): from an Anglo-Norman French diminutive of Old French soc ‘ploughshare’, probably of Celtic origin.

Example Bank:
•His eyes bulged madly in their sockets.
•The battery charger plugs into any mains socket.