practice on

practice (up)on someone or something

to train or drill on someone or something. (In preparation for the real thing. Upon is formal and less commonly used than on.) I do not want a dental student practicing upon me. I want to learn how to braid hair. Can I practice on you?
See also: on, practice
References in periodicals archive ?
Others knocked the practice on the head after evidence of pressure-selling and people paying more by switching.