thorn

nouns

something that causes irritation and annoyance

"he's a thorn in my flesh"

irritant, thorn

a small sharp-pointed tip resembling a spike on a stem or leaf

pricker, prickle, spikelet, spine, sticker, thorn

is derived from

a Germanic character of runic origin

thorn

is a type of (narrower)

any character from an ancient Germanic alphabet used in Scandinavia from the 3rd century to the Middle Ages

"each rune had its own magical significance"