What is the meaning of Grammar?

A system of rules and principles for speaking and writing a language.

The study of the internal structure of words (morphology) and the use of words in the construction of phrases and sentences (syntax).

A book describing the rules of grammar of a language.

A formal system specifying the syntax of a language.

Actual or presumed prescriptive notions about the correct use of a language.

A formal system defining a formal language

The basic rules or principles of a field of knowledge or a particular skill.

A book describing these rules or principles; a textbook.

A grammar school.

A set of component patterns, along with the rules for connecting them, which can be combined to form more complex patterns such as large still lifes, oscillators, and spaceships.

To discourse according to the rules of grammar; to use grammar.

grammar

Source: wiktionary.org