NARROW SYNTAX

[mallu]

What is narrow syntax? (Pl.dont ask me to search wikipedia there isnt any page under the title)

[lx]

How about you tell us where you heard this term, so we have a better chance at helping you? 
Definitions aren't fixed as much in linguistics as they are in comparison to many other branches of academia. There is a huge gap at times and in certain sub-branches and how one person might want to use this term could be totally counterintuitive to how other people understand it.

[Daniel]

Narrow syntax is the core of syntax (linguistic properties associated with word order and phrase interaction) that is shared across languages and represented by a specific syntactic system in the mind, at least as the term is often used by Chomsky and others in Generative Linguistics.

It's a way of saying "the core of syntax, not all that other syntaxy stuff too".