vt.

1. 捏緊，握緊；抓緊
   The girl clenched her mother's hand.

   女孩緊緊抓住她母親的手。

   The boy clenched his fists in anger.

   那男孩憤怒地握緊了拳頭。

2. 咬緊
   She clenched her teeth.

   她將牙齒咬得格格響。

3. 敲（釘）環腳

vi.

1. 緊握；緊抓；緊咬；收緊
2. （釘等）釘牢

n.[C]

1. 緊握；緊抓；緊咬
2. 敲（釘）環腳

v.

1. (with reference to one's fist or teeth) close or press together tightly, in response to stress or anger.
2. hold tightly and firmly.
3. (of muscles or a muscular part of the body) contract sharply.

n.