(~s)
1.
A ~ machine is a piece of electrical equipment that is operated by being connected to an electricity supply or to another piece of electrical equipment by means of a plug.
...a ~ radio.
ADJ: ADJ n
2.
A ~ is something such as a piece of software that can be added to a computer system to give extra features or functions. (COMPUTING)
...a ~ memory card.
N-COUNT: oft N n