a.

1. 多刺的，满是针刺的
   The leaves were long and prickly.

   叶子长而多刺。

2. 针刺般痛的；刺痛的；痒的
3. 易动怒的；敏感的
4. 棘手的，难办的

adj.

1. covered in or resembling prickles.
   ▸having or causing a prickling sensation.
2. ready to take offence.
   ▸liable to cause someone to take offence:

   a prickly subject.