Anything sharp or unpleasant to the feelings.
The white heath (Erica arborea), a thorny Mediterranean shrub.
Any of many plants with thorny stems growing in dense clusters, such as many in the Rosa, Rubus, and Smilax genera.
A pipe for smoking, made from the roots of that shrub.
That which pricks or annoys; anything troublesome.
A letter of Latin script (capital: Þ, small: þ), borrowed from the futhark; today used only in Icelandic to represent the voiceless dental fricative, but originally used in several early Germanic scripts, including Old English where it represented the dental fricatives that are today written th (Old English did not have phonemic voicing distinctions for fricatives).
A sharp protective spine of a plant.
Any shrub or small tree that bears thorns, especially a hawthorn.
To pierce with, or as if with, a thorn (sharp pointed object).