A block in volleyball is when you jump up straight with you hands straight and you block a spike.
You aren't allowed to block a serve in volleyball.
When a person spikes the volleyball hard from the other team (or side), a person from the team opposite of the one who just spiked will block the ball and keep it off their side.
If you mean like the skills used in volleyball, there are 5 main ones. Serve, set, spike, dig and block. I hope this helped. :)
block the ball from crossing to your side of the court
A block in volleyball is 2 of he 3 front row players, always the middle , jump up with arms straight up to block the oppents hit .
It means either to go to your "home positions" or get ready to block from a certain spot on the net.