thorn

noun

ˈthȯrn 

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

ˈthȯrnd 

adjective

thornless

ˈthȯrn-ləs 

adjective

thornlike

ˈthȯrn-ˌlīk 

adjective

Synonyms

• aggravation
• aggro [British]
• annoyance
• bother
• botheration
• bugbear
• exasperation
• frustration
• hair shirt
• hassle
• headache
• inconvenience
• irk
• irritant
• nuisance
• peeve
• pest
• rub
• ruffle
• trial
• vexation

Examples of thorn in a Sentence

your constant questions are a thorn in my side

Recent Examples on the Web

In the 16th-18th centuries, vessels filled with nails, thorns, hair, and other materials, were used as a form of ritual protection against witches. —The Editors, JSTOR Daily, 28 Oct. 2024

What have been your roses and thorns from that experience? —Brittany Spanos, Rolling Stone, 28 Oct. 2024

Manchin, a moderate who has often been a thorn in the side of Democratic leadership, opted to leave the party and register as an independent in May. —Kaia Hubbard, CBS News, 21 Oct. 2024

One particular thorn in his side has been the discontinuation of tax-free shopping, which had previously allowed visitors to reclaim VAT on purchases made in the UK. —Graeme Green, Robb Report, 3 Oct. 2024

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

Phrases Containing thorn

• a thorn in the/someone's flesh/side
• Christ's-thorn
• Christ-thorn
• Jerusalem thorn
• thorn apple

Kids Definition

thorn

noun

ˈthȯ(ə)rn 

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

ˈthȯ(ə)rnd 

adjective

thornless

ˈthȯ(ə)rn-ləs 

adjective