Added 9 October 2026 zep noun Categories: Food & DrinkObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about zep at Wordnik → Where our words come from → A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States. Origin Shortened from zeppelin. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: hoagiehoagywedgetorpedogrindersubmarinesubbomber Back to today's word