1. noun
a) Repetition of an activity to improve skill.
He will need lots of practice with those lines before he performs them.
She ran a thriving medical practice.
Syn: rehearsal, drill, exercise, training, workout, custom, habit, routine, wont, wone, fashion, pattern, trick, way, dry, run, trial
2. verb
a) To repeat (an activity) as a way of improving ones skill in that activity.
You should practice playing piano every day.
b) To repeat an activity in this way.
If you want to speak French well, you need to practice.
Wikipedia foundation.