narrow down

/ˌnɛroʊ daʊn/

/ˈnærəʊ daʊn/

Other forms: narrowed down; narrowing down; narrows down

Definitions of narrow down

1. verb

   define clearly
   synonyms: nail down, narrow, peg down, pin down, specify

   types:

   concretise, concretize

   make something concrete

   type of:

   determine

   fix in scope; fix the boundaries of
2. verb

   become more focus on an area of activity or field of study
   synonyms: narrow, specialise, specialize

   types:

   overspecialise, overspecialize

   become overly specialized

   type of:

   alter, change, vary

   become different in some particular way, without permanently losing one's or its former characteristics or essence