Definitions
1.noun(grammar) An adjective (or other descriptive word)
2.adjectiveOf, relating to, or providing a description.
3.adjective(grammar) Of an adjective, stating an attribute of the associated noun (as heavy in the heavy dictionary).
4.adjectiveDescribing the structure, grammar, vocabulary and actual use of a language.
5.adjectiveDescribing and seeking to classify, as opposed to normative or prescriptive.