From Longman Dictionary of Contemporary Englishmom-and-popˌmom-and-ˈpop adjective [only before noun] American EnglishBBFAMILY a mom-and-pop business is owned and managed by a family or a husband and wife a real mom-and-pop restaurant
Examples from the Corpus
mom-and-pop• a mom-and-pop restaurantFrom Longman Business Dictionarymom-and-popˌmom-and-ˈpop adjective American English mom-and-pop business/ store etcCOMMERCE a shop or small business that is owned and operated by members of the same family, and has a very limited amount of capitalMost wineries in California are mom-and-pop operations with practically no paid help other than your own family. 