WATERLINE Meaning of WATERLINE in English waterline BrE AmE ˈwɔːt ə laɪn - ə l aɪn AmE \ ˈwɔːt̬ ə r laɪn ˈwɑːt̬- ▷ waterline|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012