winnow

1 of 2

verb

win·​now ˈwi-(ˌ)nō How to pronounce winnow (audio)
winnowed; winnowing; winnows

transitive verb

1
a(1)
: to remove (something, such as chaff) by a current of air
(2)
: to get rid of (something undesirable or unwanted) : remove
often used with out
winnow out certain inaccuraciesStanley Walker
b(1)
: separate, sift
an old hand at winnowing what is true and significantOscar Lewis
(2)
: select
2
a
: to treat (something, such as grain) by exposure to a current of air so that waste matter is eliminated
b
: to free of unwanted or inferior elements : pare
c
: narrow, reduce
winnowed the field to four contenders
3
: to blow on : fan
the wind winnowing his thin white hairTime

intransitive verb

1
: to separate chaff from grain by fanning
2
: to separate desirable and undesirable elements
winnower noun

winnow

2 of 2

noun

1
: a device for winnowing
2
a
: the action of winnowing
b
: a motion resembling that of winnowing

Did you know?

Winnow Has Old English Roots

As one Bob Dylan song goes, “You don’t need a weatherman to know which way the wind blows.” In fact, all you need to do is hold up a dandelion puff the next time there’s a breeze 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 (a current example of this sense would be “winnowing out sensitive material”). People then began using the word for the selection of the most desirable elements (as in “winnowing down the list to the most qualified applicants”). Although these senses are more familiar today to most English users than the one used in processing grain, if you have trouble remembering any of them, just remember that the answer, friend, is blowing in the wind.

Examples of winnow in a Sentence

Verb The least qualified applicants were winnowed out of the initial pool. Harvesters winnowed the chaff from the wheat.
Recent Examples on the Web
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Verb
Since that time, however, cable has been winnowed by the migration of traditional TV watchers to streaming outlets. Brian Steinberg, Variety, 2 Apr. 2025 On the last day of the season, when the apprentices had been winnowed from 16 to two, then-emcee Donald Trump fired Annie on national television in favor of the comedienne Joan Rivers. Richard Lederer, San Diego Union-Tribune, 29 Mar. 2025 Sundance winnowed them down to the 67 that could meet a variety of requirements, including adequate screening and lodging locations and proximity to a sizable international airport. Nicole Sperling, New York Times, 27 Mar. 2025 Michigan State slowly but surely chipped away, winnowing the Lobos’ early 10-point lead to two by halftime, then wresting away control in the second half. Justin Williams, The Athletic, 24 Mar. 2025 See All Example Sentences for winnow

Word History

Etymology

Verb

Middle English winewen, from Old English windwian to fan, winnow; akin to Old High German wintōn to fan, Latin vannus winnowing fan, ventus wind — more at wind entry 1

First Known Use

Verb

before the 12th century, in the meaning defined at transitive sense 1a(1)

Noun

1580, in the meaning defined at sense 1

Time Traveler
The first known use of winnow was before the 12th century

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Cite this Entry

“Winnow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/winnow. Accessed 4 May. 2025.

Kids Definition

winnow

verb
win·​now
ˈwin-ō
1
a
: to remove by a current of air the parts separated from grain in threshing
b
: to expose grain to a current of air to remove waste
2
: to sort or separate as if by winnowing
winnowed the guest list down to 20
winnower
ˈwin-ə-wər
noun

More from Merriam-Webster on winnow

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