From Longman Dictionary of Contemporary Englishwindow-shoppingˈwindow-ˌshopping noun [uncountable] DLBUYthe activity of looking at goods in shop windows without intending to buy them —window-shopper noun [countable]
Examples from the Corpus
window-shopping• We didn't have any money but we enjoyed window-shopping in Fifth Avenue.• Sometimes I go window-shopping after work.From Longman Business Dictionarywindow shoppingˈwindow ˌshopping when you go to look at things in shops, often without intending to buy anything → shopping 