Oxford Dictionary English second wind nounnoun BrE BrE//ˌsekənd ˈwɪnd// ; NAmE NAmE//ˌsekənd ˈwɪnd// [singular] (informal) Add to my wordlistjump to other resultsnew energy that makes you able to continue with something that had made you tiredSee second wind in the Oxford Advanced American DictionaryCheck pronunciation: second wind oxfordlearnersdictionaries.com