n.

1. 刺，棘[C]
   No rose without a thorn.

   玫瑰多刺。（有快乐就有痛苦）

2. 有刺植物[U][C]
   Thorns sprang up and choked the wheat.

   荆棘丛生，把小麦都盖没了。

3. 恼人的事（或人）[C]
   The biggest thorn in the Prime Minister's side is inflation.

   最使首相苦恼的问题是通货膨胀。

n.

1. a stiff, sharp-pointed woody projection on the stem or other part of a plant.
2. a thorny bush, shrub, or tree, especially a hawthorn.
3. an Old English and Icelandic runic letter, þ or Þ, representing the dental fricatives /ð/ and /θ/ , eventually superseded by the digraph th.