Definition of "attributive noun" [attributive noun]
A noun that modifies another noun attributively and that is optional (that is, it can be removed without affecting the grammar of the sentence); a noun used as an adjective.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "attributive noun" in a sentence
"In its current usage, the elided word gotcha is an attributive noun modifying journalism or politics or, alliteratively, gang."