nightwatcher means A person who watches or guards something at night; a nightwatchman. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From nightwatch + -er.
noun
- A person who watches or guards something at night; a nightwatchman.“In the silence of the night melodious sounds fall upon the ear from the mysterious stillness of the monasteries, or the voices of the nightwatchers are heard in improvised songs to the perfections of the lady of their affections after the manner of their forefathers in bygone ages.”
- Someone who keeps watch in the night with questionable or harmful intentions.