commissioner

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A member of a commission.
2. n. A person authorized by a commission to perform certain duties.
3. n. A governmental official in charge of a department: a police commissioner.
4. n. Sports An official selected by an athletic association or league to exercise administrative or regulatory powers over it: a baseball commissioner.

Century Dictionary and Cyclopedia

1. n. One who commissions.
2. n. A person having or included in a warrant of authority; one who has a commission or warrant from proper authority to perform some office or execute some business for the person, court, or government giving the commission.
3. n. Specifically— In Great Britain, an officer having charge of some department of the public service which is put into commission. See to put in commission, under commission, n.
4. n. A steward or private factor on an estate, who holds a power from his constituent to manage affairs with full authority.
5. n. A commissionaire.
6. n. One of the persons elected to manage the affairs of a police burgh or non-corporate town in Scotland, corresponding to a bailie or town-councilor in a corporate town.
7. n. A betting-broker at a race-track.

Wiktionary

1. n. A member of a commission.
2. n. Someone commissioned to perform certain duties.
3. n. An official in charge of a government department, especially a police force.
4. n. Someone who commissions something

GNU Webster's 1913

1. n. A person who has a commission or warrant to perform some office, or execute some business, for the government, corporation, or person employing him.
2. n. An officer having charge of some department or bureau of the public service.

WordNet 3.0

1. n. a government administrator
2. n. a member of a commission