What kind of adjective is first?

"First" can be a few different types of adjectives depending on how it's used:

* Ordinal adjective: When it indicates order or position in a sequence (e.g., "the first day of school").

* Descriptive adjective: When it describes something as being the initial or primary instance of something (e.g., "He gave her a first kiss.").

Let me know if you have a specific example sentence and I can tell you which kind of adjective it is.