rollout Syllabification: (roll·out)Pronunciation: /ˈrōlˌout/Definition of rollout noun 1the unveiling of a new aircraft or spacecraft. the official launch or introduction of a new product or service. 2 Aeronautics the stage of an aircraft’s landing during which it travels along the runway while losing speed. 3 Football a play in which the quarterback runs toward the sideline before attempting to pass or advance. rollout in other Oxford dictionaries Definition of rollout in the British & World English dictionary