Rehearsal (noun)

1. An activity in which a performance, such as a play or a concert, is practiced before it is given in public.
2. A practice or trial run of an event or activity, typically one in preparation for a public performance.

Origin:

Late middle english: from old french rehercaille, from rehercier "practice again", from re- (expressing intensive force) + hercier "use" (from latin hircus "goa.t")

Examples:

1. The rehearsal for the play will be held tonight.
2. The band had a rehearsal before the concert.
3. She attended the dress rehearsal for the ballet.
4. The rehearsal of the wedding ceremony was done before the actual day.
5. The rehearsal of the speech was done in front of a mirror.