often attributive
1
a
: a sharp rigid process on a plant
especially : one that is a short, indurated, sharp-pointed, and leafless modified stem compare prickle, spine
b
: any of various sharp spinose structures on an animal
2
: a woody plant bearing sharp impeding processes (such as prickles or spines)
especially : hawthorn
3
: something that causes distress or irritation
often used in the phrase thorn in one's side
4
: the runic letter þ used in Old English and Middle English to represent either of the fricatives \th\ or \t͟h\ and in Icelandic to represent \th\
thorned adjective
thornless adjective
thornlike adjective

Examples of thorn in a Sentence

your constant questions are a thorn in my side
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
At times, the offense has looked so good that Sam Darnold is now the hottest free agent this offseason, while the defense has been a thorn in quarterbacks sides with Flores’ relentless blitzing (Minnesota leads the league in blitz percentage). Austin Mock, The Athletic, 10 Jan. 2025 The senior forward was a thorn in the Huskies’ side two years ago, before the ACL injury that claimed most of his 2023-24 season and, seemingly, much of this year as well. Joe Arruda, Hartford Courant, 4 Jan. 2025 Fundraising is the backbone of many nonprofits' sustainability and often a thorn in their sides. Expert Panel®, Forbes, 26 Nov. 2024 Several rabble-rousers who were a thorn in the leadership’s side are leaving the House, including Reps. Matt Rosendale (R-Mont.) and Bob Good (R-Va.). Filip Timotija, The Hill, 24 Dec. 2024 See all Example Sentences for thorn 

Word History

Etymology

Middle English, from Old English; akin to Old High German dorn thorn, Sanskrit tṛṇa grass, blade of grass

First Known Use

before the 12th century, in the meaning defined at sense 2

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

Dictionary Entries Near thorn

Cite this Entry

“Thorn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thorn. Accessed 18 Jan. 2025.

Kids Definition

thorn

noun
1
: a woody plant bearing sharp processes (as prickles or spines)
especially : hawthorn
2
: a sharp stiff process on a plant
especially : a stem modified into a short, stiff, and leafless sharp point
3
: something or someone that causes distress or irritation
often used in the phrase thorn in one's side
thorned adjective
thornless adjective

More from Merriam-Webster on thorn

Last Updated: - Updated example sentences
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