extensions
nounUK /ɪkˈstenʃənz/
US /ɪkˈstenʃənz/
Extensions are extra pieces added to make something longer or bigger.
She put extensions in her hair to make it longer.
OTHER MEANINGS
2. Extra time given to finish something.
The teacher gave us extensions on our homework.
3. More phone lines connected to one main number.
Please dial extension 204 to reach the office.
4. Extra rooms added to a building.
They built two extensions onto their house.
5. Computer files that add new features to a program.
He installed browser extensions to block ads.