Yes, but WHICH dictionary?

Extract

Dictionaries of English today draw upon a tradition that is almost 400 years old. Depending on your point of view, this is a tradition of competition and cross-fertilization, of plagiarism and lexicographical incest, or something that has wavered and wandered between high originality and low theft. Some commentators have even argued that many English dictionaries are just variations on a common text that has been evolving since the 17th century.