From Longman Dictionary of Contemporary Englishnarrow something ↔ down phrasal verbto reduce the number of things included in a range The police have narrowed down their list of suspects. to I’ve narrowed it down to one of two people. → narrow→ See Verb table
Examples from the Corpus
narrow down• One side of the garden at Barnsdale has a narrow border running down its length.• But Fugelso narrows the percentages down: six percent of women and 10 percent of men suffer from the affliction.• A long narrow corridor ran down the middle of the building with doors leading off it.• Now you've narrowed the choice down to more manageable proportions, it's time for the specialist retailer and test fitting.• I have narrowed it down to one of two employees, both of whom work in the kitchen.• What you must do is carry out as much investigation as is reasonably possible to narrow it down to one suspect.• The town itself has a pedestrian centre with quaint narrow streets leading down to the lake front.• By lunchtime he had narrowed his search down to three out of the dozens of girls missing in the London area.narrow to• Now you've narrowed the choice down to more manageable proportions, it's time for the specialist retailer and test fitting.• I have narrowed it down to one of two employees, both of whom work in the kitchen.• What you must do is carry out as much investigation as is reasonably possible to narrow it down to one suspect.• An experienced headhunter could narrow the field down to short-list stage much more quickly and cost-effectively, Tagg argued.• The town itself has a pedestrian centre with quaint narrow streets leading down to the lake front.• By lunchtime he had narrowed his search down to three out of the dozens of girls missing in the London area. 