From Longman Dictionary of Contemporary Englishpro-ampro-am /ˌprəʊ ˈæm◂ $ ˌproʊ-/ noun [countable] DSa competition, especially in golf, for professionals (=people who play for money) and amateurs (=people who play just for pleasure) —pro-am adjective
Examples from the Corpus
pro-am• Missed more two-footers than Ray Charles at a celebrity pro-am golf tournament.• Add sponsors' bonuses, company days, pro-ams and the figure exceeds £150,000.• Jack Lemmon, his longtime amateur partner, will be absent after 23 consecutive unsuccessful attempts to make the pro-am cut.• Jack had had a good to middling season and with pro-ams and the occasional exhibition match I had earned nearly £8000.Origin pro-am (1900-2000) pro + am (from amateur) 