From Longman Dictionary of Contemporary Englishdairy farmˈdairy ˌfarm noun [countable]  TAa farm that has cows and produces and sells milk
                                                    
                                                Examples from the Corpus
dairy farm• In 1915 the farm was taken over by Fauchons who ran it as a dairy farm.• He turned the beef holding into a dairy farm and soon began expanding by leasing other dairy farms all over Ireland.• With Marjorie, she rented a tiny cottage at the edge of a dairy farm in Dorset, Vermont.• They live together on a lushly beautiful dairy farm. 
