The first known English dictionary was published in the middle of the eighteenth century . That was roughly two hundred year ago. It was Dr. Samuel Johnson who prepared the first English dictionary. A very laborious task . He was thoroughly qualified for it. And when we remember that produced it all alone, we must say it was a wonderful achievement of his. Though his meanings were sometimes fanciful. Since then many great scholars have worked at it, Walker, Webster, Chambers and Ogilvie, to name a few. The standard English dictionary of today is the oxford Dictionary.
A dictionary is of so much use that everyone has a copy at home. Every student should have a dictionary suited to his standard and we must make use of it constantly. In our reading , we come across scores of world whose meaning we ming guess from the context but unless the student uses his dictionary his understanding cannot he precise. So the dictionary solves all our problem especially in difficult world.