reactiondrill

noun
UK /riˈækʃən drɪl/
US /riˈækʃən drɪl/

A reaction drill is a practice game where you move fast when a signal comes.

The coach ran a reaction drill to help the players start faster.


OTHER MEANINGS

2. A safety exercise where people practice responding quickly to an emergency.

The school held a reaction drill to practice leaving the building fast.

3. A computer task that measures how quickly a person clicks when something appears.

He improved his score on the online reaction drill.

4. A military exercise that tests how fast a unit responds to a sudden order.

The soldiers completed a reaction drill before dawn.