Rest (music)
A rest is the absence of a sound for a defined period of time in music, or one of the musical notation signs used to indicate that.
The length of a rest corresponds with that of a particular note value, thus indicating how long the silence should last. Each type of rest is named for the note value it corresponds with (e.g. quarter note and quarter rest, or quaver and quaver rest), and each of them has a distinctive sign.