thorn

[ thawrn ]
/ θɔrn /

noun

a sharp excrescence on a plant, especially a sharp-pointed aborted branch; spine; prickle.
any of various thorny shrubs or trees, especially the hawthorns belonging to the genus Crataegus, of the rose family.
the wood of any of these trees.
a runic character (þ), borrowed into the Latin alphabet and representing the initial th sounds in thin and they in Old English, or thin in modern Icelandic.
something that wounds, annoys, or causes discomfort.

verb (used with object)

to prick with a thorn; vex.

Idioms

    thorn in one's side/flesh, a source of continual irritation or suffering: That child is a thorn in the teacher's side.

Origin of thorn

before 900; Middle English (noun), Old English; cognate with Dutch doorn, German Dorn, Old Norse thorn, Gothic thaurnus

Related forms

thorn·less, adjectivethorn·like, adjectiveun·thorn, verb (used with object)

Definition for thorn (2 of 2)

Thorn

[ tawrn ]
/ tɔrn /

noun

German name of Toruń.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thorn

British Dictionary definitions for thorn (1 of 2)

thorn

/ (θɔːn) /

noun

Derived Forms

thornless, adjective

Word Origin for thorn

Old English; related to Old High German dorn, Old Norse thorn

British Dictionary definitions for thorn (2 of 2)

Thorn

/ (toːrn) /

noun

the German name for Toruń
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for thorn

thorn

[ thôrn ]

A short, hard, pointed part of a stem or branch of a woody plant. Compare spine.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.