What Does Mechanic Mean?

The word mechanic is a noun and you can use the word for a person who is responsible to repair machines. The word is especially used for a person who is responsible to repair engines of a vehicle.
     
The word is one of the most common one and you will find that people are using the word quite often in day-to-day life. The following sentence can make the meaning of the word quite clear as it is used in the context: John's vehicle has a problem so he has to leave it to a mechanic. The sentence says that because of the technical problem the person has to leave his vehicle to a person who can repair it.
      
When you add the letter 's' in the word mechanic the word conveys several other meanings and the science of movement itself can be termed as mechanics and also the practical study of machinery.

My car is not good on the wheel