chaplain

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A member of the clergy attached to a chapel.
2. n. A member of the clergy who conducts religious services for an institution, such as a prison or hospital.
3. n. A member of the clergy who is connected with a royal court or an aristocratic household.
4. n. A member of the clergy attached to a branch of the armed forces.

Century Dictionary and Cyclopedia

1. n. An ecclesiastic attached to a chapel; especially, one officiating in the private chapel of a king or nobleman, or other person of wealth or distinction. Forty-eight clergymen of the Church of England hold office as chaplains of the sovereign in England, and are entitled chaplains in ordinary, four of them being in attendance each month. There are six chaplains in Scotland, clergymen of the Church of Scotland, but their only duty is to conduct prayers at the election of Scottish representative peers.
2. n. An ecclesiastic who renders service to one authorized to employ such assistance, as to an archbishop, or to a family; a confessor.
3. n. A clergyman who occupies an official position, and performs certain religious functions, in the army or navy, in a legislative or other public body, in a charitable institution, or the like: as, the chaplain of the House of Representatives.
4. n. A private secretary to the lady superior of a convent.

Wiktionary

1. n. A member of the clergy officially assigned to an institution, group, private chapel, etc.

GNU Webster's 1913

1. n. An ecclesiastic who has a chapel, or who performs religious service in a chapel.
2. n. A clergyman who is officially attached to the army or navy, to some public institution, or to a family or court, for the purpose of performing divine service.
3. n. Any person (clergyman or layman) chosen to conduct religious exercises for a society, etc..

WordNet 3.0

1. n. a clergyman ministering to some institution