Any body can describe the term Engineer ? what is the meaning and derived from.

The word engineer is derived from the Latin words ingeniare and ingenium 

Engineers, as practitioners of engineering, are people who invent, design, analyze, build and test machines, systems, structures and materials to fulfill objectives and requirements while considering the limitations imposed by practicality, regulation, safety, and cost

The term engineering derived from the latin ingenium it means cleverness and inganiare it means to contrive devise.

Engineering is a type of subject that deals with the science of designing and building roads,bridges etc. 

Engineering means Study of Engine.

The word Engineer derived from Engine

The mother branch of Engineer is Mechanical Engineering