Who is an Engineer

For the 'Correct' definition you must check a dictionary...
The correct, laymans and engineers* definitions are all doubtless different.
You can also start adding extra words like design, production, mechanical electronics...or even bastardisations like 'social' etc.

Del
* Different branches of engineering may also see the definition as subtly different.

An engineer is someone who does engineering.

There are many types of engineers:

Check out this site for clarification:

http://www.futuresinengineering.com/what.php?id=2

Aeronautical
Biomedical
Mechanical
Chemical
Civil
Sustainability Design
Electrical and Electronics
Systems
Biomechanical
Photonics
Computer software
Computer hardware
Nuclear
Mineral
Agricultural

Just to name a few. Not to leave out the engineer who pilots the train!

"An engineer is someone who can do for ten shillings what any fool can do for a pound." - Neville Shute

Someone who drives a train or keeps a ship's systems safe and running.

They used to ride in airplanes, too, but they're extinct now.

<...Someone who drives a train...>

That depends upon location. In the UK, the term "driver" is used, be it on an electric unit, diesel, steam or whatever. The term "engineer" in that context is a term generally originating in the North American continent and can be celebrated as another abstruse example of nations divided by a common language (pavement/sidewalk, boot/trunk, windscreen/windshield, etc., etc.).

Pardon the pedantry.

Roger Pink, of course. Just read the ever-authoritative CR4 avatar descriptions; no one else has "The Engineer" label.

I can only imagine what spoilsport axed my earlier post on this, just as W.C. Fields asked, "What scoundrel stole the cork from my lunch?"

Wanna try again? I offer no "Sorry, I couldn't resist" this time. Nor do I self-vote OT as before.

Yesterday I couldn't even spell Enginerr and today I is one.

There are two types of engineers; one has a degree; the other does not. The first engineer uses engineering principals learned in college and applies them to designs. The second type of engineer, although not degreed, has a certificate that says he is qualified to operate a machine such as a railroad locomotive or a steam generating plant. Like everything else, more emphasis is put on requiring more education for tasks that didn't require a degree before. This is probably because machines have become more complex. The engineer of an airliner is a different story. He was replaced by computers and sensors.

Another description of an engineer is: one type wears a hard hat; the other doesn't.

ALL PERSONS WHO ARE TECHNICAL SENSIBELE.