Oxford Dictionary English hard line nounnoun BrE BrE//ˌhɑːd ˈlaɪn// ; NAmE NAmE//ˌhɑːrd ˈlaɪn// [singular] Add to my wordlistjump to other resultsa strict policy or attitude the judge’s hard line against drug dealers The government took a hard line on the strike.See hard line in the Oxford Advanced American DictionaryCheck pronunciation: hard line oxfordlearnersdictionaries.com