CONTRAIL Meaning of CONTRAIL in English con ‧ trail /ˈkɒntreɪl $ ˈkɑːn-/ BrE AmE noun [countable] [ Date: 1900-2000 ; Origin: condensation trail ] a line of white steam made in the sky by a plane Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012