"That was a near miss." What part of speech is "near"? 1.noun 2.adjective 3.verb 4.adverb

The whole phrase "near miss" is considered to be a countable noun by most dictionaries , but if you want the word "near" in particular, it functions here as an adjective.

I totally agree with Mr Ahmad Saleh Ibraheem Abu Kharmh   

Near miss in this particular case is a noun. Near miss is used for something that falls just short of success.

I agree with Mr Ahmad answers. Thanks. 

Apologized for the answer, I do not know, leave the answer for the professionals.

Near here is an Adjectiv or it can be served as an Adverb as well 

well it is an adjective it comes before a noun