MEANINGS AND DEFINITION OF GRAMMARMEANINGS AND DEFINITION OF GRAMMARCentral to the teaching and learning of languages.Central to the teaching and learning of languages.Description of the rules that goern ho! a language"s sentences are for#ed.(Thornbury, 2008)Description of the rules that goern ho! a language"s sentences are for#ed.(Thornbury, 2008)The stud$ of the s$nta% and #orpholog$ of sentences.Thornbury, 2012)The stud$ of the s$nta% and #orpholog$ of sentences.Thornbury, 2012)The stud$ of !hat for#s &or structures' are possi(le in a language) All language in use can (e anal$sed at each of the four leels* sound) !ord) sentence and te%t.Rutheford (1987)The stud$ of !hat for#s &or structures' are possi(le in a language) All language in use can (e anal$sed at each of the four leels* sound) !ord) sentence and te%t.Rutheford (1987)De+ned as a description of the structure of a language and the !a$s in !hich units such as !ords and phrases are co#(ined to produce sentences in the language.(Dictionary of Applied Linui!tic!)De+ned as a description of the structure of a language and the !a$s in !hich units such as !ords and phrases are co#(ined to produce sentences in the language.(Dictionary of Applied Linui!tic!)De+ned as the !a$ a language #anipulates and co#(ines !ords &or (its of !ords' in order to for# longer units of #eaning.( "r, 199#)De+ned as the !a$ a language #anipulates and co#(ines !ords &or (its of !ords' in order to for# longer units of #eaning.( "r, 199#)S$ste# of rules goerning the conentional arrange#ent and relationship of !ords in a sentence.($ro%n, 2007)S$ste# of rules goerning the conentional arrange#ent and relationship of !ords in a sentence.($ro%n, 2007)