This essay is written to present Russell's theory of definite description. The main content of this essay including: the definition of definite description, the puzzles regarding definite description, Russell's theory of definite description, how this theory solves the puzzles, Strawson's objection to this theory, my assessment on the cogent nature of Strawson's objection and my assessment. on the convincing character of Russell's theory of definite description. What is a definite description? A definite description is an expression that is commonly written in the form “so and so” in which “so and so” is a singular noun. . An example of accurate descriptions is "the president of Russia." Besides “so and so,” precise descriptions can also take the form of possessives such as “Mr.” Smith's daughter. What puzzles does Russell claim his theory can be solved? It is easy for us at first to see description defined as a singular term device. In other words, one might believe that the role of a definite description is to refer to a particular object. Consider the following proposition as an example of this belief: “the current president of Russia was bald.” In this statement we can see that “the current president of Russia” refers to Putin and the truth value of this statement depends on how things happen to the real man – Putin. However, Russell believes that if we do this there will be logic puzzles as shown below. The first enigma claimed by Russell is that of informative identity. We will study the following example: "Clive is the author of Narnia, in which 'Clive' is a noun and 'the author of Narnia' is a specific description and this statement is true. According to the concept of singular term and our hypothesis, "...... middle of paper ......es is the only truly "competitor" to Russell's theory and it is reasonable that Russell does not mention this point view as in his argument. Furthermore, as mentioned earlier, in my view Strawson's objection is not sufficiently compelling to reduce the strength of Russell's theory of definite description. Conclusion Russell's theory of definite description totally changed the way we perceive definite descriptions by resolving the three logical paradoxes. It is undeniable that the theory itself is not yet perfect and may give rise to objections. Yet, so far, Russell's theory is the most logical explanation of the role of definite description. Works cited by B. Russell. “Descriptions of Chapter XVI”. B.Russell. Introduction to mathematical philosophy. London: Routledge, 1993.—. “On denotation.” Spirit (1905).PFStrawson. “On the reference.” Mind (1950).Lee, Barry 2013: R&A Conferences