Lay over Definition 1 of 3Pro Tip 1/3Travel Delays Implies an unplanned or unwanted interruption in travel, usually at an airport. Our flight was delayed, resulting in an unexpected lay over. Pro Tip 2/3Duration Specification Often followed by the length of time, conveying how long you'll stay at the interim place. We have a two-hour lay over in Denver. Pro Tip 3/3Intermediate Stop Refers specifically to a temporary stop on a journey, not the final destination. I'll meet you during my lay over in Miami.