a.

1. 英勇的，无畏的；大胆的[+to-v]
   Mr. Jordan made a bold speech.

   乔丹先生做了一次大胆的演讲。

2. 放肆的，厚颜无耻的
   She was hurt by his bold remark.

   她被他唐突无礼的话所伤害。

3. 显著的，轮廓清晰的
4. 险峻的
5. （字等）粗笔画的，黑体的[Z]
   His drawings were done in a few bold lines.

   他的画以几笔粗线挥就。

6. 活跃的，无拘束的
   He drew on his bold imagination in composing music.

   他凭借自由驰骋的想像力作曲。

7. 鲁莽的，冒失的

adj.

1. confident and daring or courageous.
   ▸dated audacious; impudent.
2. (of a colour or design) strong or vivid.
   ▸(of type) having thick strokes.

n.