watchman

n.; pl. Watchmen [ 1913 Webster ]

1. One set to watch; a person who keeps guard; a guard; a sentinel. [ 1913 Webster ]

2. Specifically, one who guards a building, or the streets of a city, by night. [ 1913 Webster ]

Watchman beetle (Zool.), the European dor. --
Watchman's clock, a watchman's detector in which the apparatus for recording the times of visiting several stations is contained within a single clock. --
Watchman's detector, or
Watchman's time detector, an apparatus for recording the time when a watchman visits a station on his rounds. --
Watchman's rattle, an instrument having at the end of a handle a revolving arm, which, by the action of a strong spring upon cogs, produces, when in motion, a loud, harsh, rattling sound. [ 1913 Webster ]