n.[C]

1. 誓，誓言，誓约[（+of）][+to-v]
   We made a vow to stay friends forever.

   我们发誓永远做朋友。

2. 郑重宣言；许愿
   My parents are under a vow to go to church every Sunday.

   我父母许愿，每星期日都去做礼拜。

3. 立誓出家；遁入空门

vt.

1. 发誓要（做）[+to-v][+（that）]
   I vowed never to reveal the secret.

   我发誓决不泄漏这一秘密。

2. 郑重宣告[+（that）]
   She vowed that she would take the matter to court.

   她郑重宣布要把这事诉诸法律。

vi.

1. 发誓，许愿
2. 郑重宣告

n.

v.

1. solemnly promise to do something.
2. archaic dedicate to someone or something, especially a deity.