n.

1. 细枝，嫩枝
   He made a fire with dry twigs.

   他用干树枝生火。

2. （神经、血管等的）小支脉
3. 占卜杖

vt.【英】【口】

1. 理解，懂得
   I don't quite twig what you are driving at.

   我不太明白你的意思。

vi.【英】【口】

1. 明白，领悟
   I kept dropping hints but he still didn't twig.

   我不断向他暗示，可他还是不明白。

n.

1. a slender woody shoot growing from a branch or stem of a tree or shrub.
2. Anatomy  a small branch of a blood vessel or nerve.

v.

1. Brit. informal suddently understand or realize something.
2. archaic see; perceive.