Definitions for "Watchman"
One set to watch; a person who keeps guard; a guard; a sentinel.
Specifically, one who guards a building, or the streets of a city, by night.
A freeman responsible for law and order in Ileshian settlements. In cities the City Watch is a quasi-professional troop, which investigates crimes and maintains the peace. In smaller settlements, the title of Watchman is held by a respected member of the community.
Watchman (ISBN 0-75285-915-3) is a 1988 novel written by Ian Rankin, and is one of the author's earliest works. It was reissued with a new introduction by Rankin in 2004.