1. Conforming to the rules of grammar: This is the most common definition. It means that something is correct according to the accepted rules of a particular language. For example, "The sentence 'I am going to the store' is grammatical."
2. Relating to grammar: This definition is broader and encompasses the study of grammar as a whole, including its rules, structure, and history. For example, "The professor gave a lecture on the grammatical features of the English language."
Here are some examples of how "grammatical" is used in a sentence:
* "That sentence is grammatically correct."
* "She has a good grammatical understanding of the language."
* "The grammatical structure of the sentence is complex."
It's important to note that the term "grammatical" can be subjective, as different languages have different rules, and even within a single language, there can be variation in usage and acceptance.