Learn how to say Grammar correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word grammar:
1 [mass noun] the whole system and structure of a language or of languages in general, usually taken as consisting of syntax and morphology (including inflections) and sometimes also phonology and semantics.
[usually with modifier] a particular analysis of the system and structure of language or of a specific language:
[count noun] a book on grammar:
my old Latin grammar
a set of actual or presumed prescriptive notions about correct use of a language:
it was not bad grammar, just dialect
the basic elements of an area of knowledge or skill:
the grammar of wine
Computing a set of rules governing what strings are valid or allowable in a language or text.
2British informal a grammar school.
late Middle English: from Old French gramaire, via Latin from Greek grammatikē (tekhnē) ‘(art) of letters’, from gramma, grammat- ‘letter of the alphabet, thing written’