In grammar, AWK is not a term that is commonly used. However, in the context of text processing and programming, AWK refers to a domain-specific language designed for text processing and typically used as a data extraction and reporting tool. It is named after its creators: Alfred Aho, Peter Weinberger, and Brian Kernighan.
If you are referring to grammar in the context of language and linguistics, there is no specific meaning for AWK. It might be a typo or a misunderstanding. If you have a different context in mind, please provide more details for a more accurate explanation.