Spokesman (noun)

1. A person who speaks on behalf of a group or organization.
2. A representative or spokesman of a company, organization, or government.

Origin:

From middle english, from the phrase spoke of man, from spoke ("of a wheel") + man.

Examples:

1. The company spokesman gave a statement to the press.
2. He was appointed as the spokesman for the organization.
3. The government spokesman denied the allegations.
4. She was chosen to be the spokesman for the campaign.
5. The spokesman for the union announced the strike.