n.

1. 目击者；见证人[C][（+of/to）]
   I was a witness to the argument.

   我是那场争论的见证人。

2. 【律】证人；证物；连署人[C]
   He was called as a defense witness.

   他被传唤作被告的证人。

3. 证词[U]
   She was punished for giving false witness.

   她因作伪证受到惩处。

4. 证据，证明[C][（+to）]

vt.

1. 目击
   I witnessed the traffic accident.

   我目睹了那次交通事故。

2. 作……的证人；连署
   The two servants witnessed Mr. Smith's will.

   两个仆人在史密斯先生的遗嘱上签名作证。

3. 为……作证，证明
4. 是……的发生地点
   The year 1849 witnessed a great war in Hungary.

   一八四九年匈牙利发生了一场大战。

vi.

1. 作证，证明
   Several people witnessed against the accused.

   几个人作了不利于被告的证明。

2. （宗教）作见证

n.

1. a person who sees an event take place.
2. a person giving sworn testimony to a court of law or the police.
3. a person who is present at the signing of a document and signs it themselves to confirm this.
4. evidence; proof.
   ▸open profession of one's religious faith through words or actions.

v.

1. be a witness to.
2. be the place, period, etc. in which (an event or development) takes place.
3. be a sign or proof of.
   ▸ (witness to) openly profess one's religious faith in.