weed out

weed out idiom
Eliminate as inferior, unsuited, or unwanted, as in She was asked to weed out the unqualified applicants. This expression transfers removing weeds from a garden to removing unwanted elements from other enterprises. [First half of 1500s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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