It's Merriam-Webster's Word of the Day for September 20th.
Today's word is winnow, spelled W-I-N-N-O-W.
Winnow is a verb.
In general contexts, winnowing is about removing what is not wanted.
One can winnow items or one can winnow something that has items.
You winnow less important or less desirable items by removing them from a group or list.
And you winnow a list or group by removing the less important or less desirable items from it.
In agricultural contexts,
to winnow chaff or unwanted seed coverings and other debris is to remove it from grain by throwing the grain up in the air and letting the wind blow the unwanted parts away.
Here's the word used in a sentence from the New York Times.
Tasked with winnowing the field down to 17 semifinalists,
the judges filled out score sheets for each part of the competition.
As Bob Dylan once sang, you don't need a weatherman to tell which way the wind blows.
In fact, all you need to do is hold up a dandelion puff the next time there's a gale blowing,
and watch the wind winnow the silver-white seeds from the rest of the head.
Winnow and wind are both ancient words in English,
and both share an ancestor with the Latin word for wind, ventus.
Winnow first applied to the removal of chaff.
seed coverings, and other unwanted debris from grain using the wind or other air current.
This use was soon extended to describe the removal of anything undesirable or unwanted.