Pronunciation IPA (key): /ˈsʌndeɪ/ Audio (UK)(file) Homophone: Sunday Noun Singular sundae Plural sundaes A sundae is a type of ice cream dessert. I had a sundae after lunch today. This short entry needs someone to make it better. You can help Wiktionary by adding to it. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads