(~s)
1.
In music, a ~ is a collection of different tunes or songs that are played one after the other as a single piece of music.
...a ~ of traditional songs.
N-COUNT: oft N of n
2.
In sport, a ~ is a swimming race in which the four main strokes are used one after the other.
Japan won the Men’s 200 metres Individual Medley.
N-COUNT: oft supp N