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
a person who runs or is in charge of an engine in an airplane, a ship, etc.
a person who runs a train
2engineerverb
to plan, build, or manage (something) by using scientific methods—usually used as (be) engineered
to produce or plan (something) especially in a clever and skillful way
to change the genetic structure of (a plant or animal)—usually used as (be) engineered