Grammar is the system of rules and principles for speaking or writing a natural language, particularly a linguistic description of the morphology and syntax of the language.
Grammar may also refer to: Grammar book, a book describing the grammar of one or more languages Formal grammar, in mathematics, logic, and theoretical computer science a set of production rules for character strings in a constructed formal language (e.g., a programming language) Prescriptive grammar, a style guide laying down norms and guidelines for writing and speaking a natural language
See also Grammar school Grammer (disambiguation)