Oxford Dictionary English skin-diving nounnoun BrE BrE//ˈskɪn daɪvɪŋ// ; NAmE NAmE//ˈskɪn daɪvɪŋ// [uncountable] Swimming Add to my wordlistjump to other resultsthe sport or activity of swimming underwater with simple breathing equipment but without a special suit for protection to go skin-diving See related entries: SwimmingSee skin-diving in the Oxford Advanced American DictionaryCheck pronunciation: skin-diving oxfordlearnersdictionaries.com