n.

something that causes irritation and annoyance

"he's a thorn in my flesh"

同義詞：irritant

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

同義詞：spineprickleprickerstickerspikelet

a Germanic character of runic origin

Ionic liquid-assisted synthesis of thorned gold plates comprising three-branched nanotip arrays.
Biological Control of Dense-Thorned Bitter Apple, Solanum sisymbriifolium Lam. (Solanaceae), in South Africa
Synthesis and Properties of the Thorned Hydroxyapatite Rods Prepared with Electrochemical Method
[Weeds in roughage cultivation. Leathery - thorned and not appetizing]. [Italian]
[Thorned bulbous plant]
Picking Thorned Daises
Manacles, Thorned
Self-dual maps on the sphere
Characteristics and Breeding of a New Thornless Castor aralia Cultivar, "Cheongsong Ⅱ"
Effect of Cryoapplication on Fractal Organization of Ultrastructure of Parodontium Soft Tissues in Destruction and Penumbra Zones