noun
grammar
GRAM-ur/ˈɡræmər/
The structural rules governing a language or formal system.
The teacher uses word cards to show how grammar organizes sentences.

Etymology
The learning behind grammar originally encompassed letters and literature broadly. Its meaning narrowed to a systematic account of language rules, including how sentences are formed.
In context
English sentence building is not about memorizing grammar rules. It is about understanding patterns and adding information step by step.
More examples
- In English grammar, the subject and verb usually agree.
- We study grammar to understand how sentences are built.
- The programming language has a grammar that defines valid commands.
Forms
grammar · grammars
grammatical adjective — Relating to the structural rules of language.
grammarian noun — A person who studies or teaches grammar.