We use the definite article in front of a noun when we believe the listener/reader knows exactly what we are referring to:. The is a grammatical article in english, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers.
How to use the in a.. The meaning of the is —used as a function word to indicate that a following noun or noun equivalent is definite or has been previously specified by context or by circumstance.