Watch'man, n.
n.; pl. WATCH'MEN.
Sense 1. One set to watch; a person who keeps guard; a sentinel.
Sense 2. One who guards the streets of a city or building by night.
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.