Wiktionary
vb. (context idiomatic English) Make more specific.
WordNet
v. define clearly; "I cannot narrow down the rules for this game" [syn: pin down, peg down, nail down, narrow, specify]
define clearly; "Can you pin down the difficulties" [syn: pin down]
become more special; "We specialize in dried flowers" [syn: specialize, specialise, narrow] [ant: diversify, diversify]
Usage examples of "narrow down".
We're still looking, but with a picture, I'm sure we can narrow down the suspects soon.
I will explain, while they narrow down the precise coor dinates of the demon's interference.
He could narrow down her most likely routes to two, and two was a very manageable number.
I needed a small Locator pack to narrow down Derron's and Patrice's shoulder tags, plus demolition cubes to cover any tracks I might leaveassuming I could pull it off.
They can make a start on a door-to-door in the village, see if we can narrow down who saw her last and where.