winnow /ˈwɪnəʊ/ (winnowing,winnowed,winnows)

• 1.  

  V-T（及物动词） If you winnow a group of things or people, you reduce its size by separating the ones that are useful or relevant from the ones that are not. 筛选; 遴选 [文学性]

  例：

  Administration officials have winnowed the list of candidates to three.

  行政官员将候选人名单筛减到三人。