1en·gi·neer 
/ˌɛnʤəˈniɚ/ noun
plural en·gi·neers /ˌɛnʤəˈniɚ/ noun [count] 1 : a person who has scientific training and who designs and builds complicated products, machines, systems, or structures : a person who specializes in a branch of engineering
▪ Design engineers are working on ways to make the cars run more efficiently. ▪ a mechanical/civil/electrical engineer ▪ a software engineer 2 a : a person who runs or is in charge of an engine in an airplane, a ship, etc.
▪ a flight engineer
b US : a person who runs a train
▪ The engineer stopped the train.
c Brit : a person who is trained to repair electrical or mechanical equipment
▪ The telephone engineer [=(US) repairman] soon got my phone working again. 3 : a soldier who builds roads, bridges, etc.
▪ Army engineers were called in to construct the canal.
▪ Design engineers are working on ways to make the cars run more efficiently. ▪ a mechanical/civil/electrical engineer ▪ a software engineer
▪ a flight engineer
b US : a person who runs a train
▪ The engineer stopped the train.
c Brit : a person who is trained to repair electrical or mechanical equipment
▪ The telephone engineer [=(US) repairman] soon got my phone working again.
▪ Army engineers were called in to construct the canal.
