Longman Dictionary of Contemporary English - engineer

~1 n 1 someone who designs the way roads, bridges, machines etc are built  (Mike's an electrical engineer.) 2 someone who controls the engines on a ship or aircraft 3 BrE someone who repairs electrical or mechanical equipment  (The engineer's coming to fix the phone today.) 4 a soldier in the army who designs and builds roads, bridges etc 5 AmE someone who drives a train ~2 v 1 to arrange something by clever secret planning  (He had powerful enemies who engineered his downfall.) 2 often passive to design and plan the construction of roads, bridges, machines, etc  (This new jet engine is superbly engineered.)