| grammar |
| Definition:
(1) The structure and rules of a language. (2) The set of conventions outlining how to speak and write in an acceptable fashion. |
| Etymology: The word ultimately derives from the Greek grammatike tekhne, art of letters (from gramma, letter). |
| Oxford English Dictionary: Its first citation is from 1362: "Gramer for gurles, I gon furste to write." (Langl. P. Pl. A. xi. 131 ) |