The word "practice" refers to the act of repeatedly doing something in order to improve your skills or knowledge in a particular activity or field. Full definition
«The Conduct Rules provide for a constellation of obligations that together make up the overarching duty of professionalism that conditions the privilege of practising law in Ontario.» (canadianlawyermag.com)
I hope that whatever lies ahead, law schools will continue to draw on the expertise and experience of practising lawyers for this very reason. (slaw.ca)
Certainly, for some such customers, such as practising lawyers, accountants and tax advisers, it might be downright irresponsible for them to spend too much of their thinking and writing time worrying about their publications, online services and workflow tools. (slaw.ca)