Used before a noun phrase, including a simple noun / The definite grammatical article that shows that the noun phrase that immediately follows it is definitely identifiable...
...because it has already been mentioned, is to be completely specified in the same sentence, or very shortly thereafter.
Used before a noun phrase, including a simple noun / The definite grammatical article that shows that the noun phrase that immediately follows it is definitely identifiable... / ...because it is presumed to be definitely known in context or from shared knowledge.
Used before a noun designating something considered to be unique, or of which there is only one at a time.
Used to indicate a certain example of (a noun) which is usually of most concern or most common or familiar.
Used before a body part, a family member, a pet (especially of someone previously mentioned), as an alternative to a possessive pronoun.
Precedes a familiar nickname or other term of address.colloquial
Used in many idiomatic expressions and proverbs to refer to common objects, roles, or situations connected with something definite, in the manner of an analogy.
Used before a noun phrase, including a simple noun
When stressed, indicates that it describes something which is considered to be best or exclusively worthy of attention.
When stressed, used before the name of a famous person, to distinguish said person from a hypothetical lesser-known person with the same name.
Used before a noun phrase beginning with superlative or comparative adjective or an ordinal number, indicating that the noun refers to a single item.
Introducing a singular term to be taken generically: preceding a name of something standing for a whole class.
Used with the plural of a surname to indicate the entire family.
Used with an adjective
Added to a superlative or an ordinal number to make it into a substantive.
Used before an adjective, indicating all things (especially persons) described by that adjective.
Used before a demonym ending in -ish or -ese to refer to people of a given country collectively.