Adverb
In an attributive manner.
Source: Webster's dictionarythe genitive noun is used attributively Source: Internet
Adjectives agree with their nouns in number and gender but agree in state only if used attributively. Source: Internet
For example, the noun knee can be said to be used substantively in my knee hurts, but attributively in the patient needed knee replacement. Source: Internet
Most adjectives, when used attributively, appear after their nouns: le vin rouge ("the red wine"). Source: Internet
When used attributively (as in web page, web browser, website, web server, web traffic, web search, web user, web technology, etc.) it is invariably written in lower case. Source: Internet