weeding out

English

present participle and gerund of weed out.
- 1950 December, H. C. Casserley, “Locomotive Cavalcade, 1920-1950—6”, in Railway Magazine, page 847:
  As to the future, it is evident that, before many years have elapsed, there will have been a drastic weeding-out of even comparatively modern designs which do not conform to British Railways standards.