snoozer

noun

1. One who snoozes; a sleeper.
2. (colloquial)Something that is boring, uninteresting or unremarkable; something that would tend to induce sleep.

   “The program is usually pretty good, but last Wednesday's episode was a real snoozer.”

3. (UK, obsolete)A thief who steals from hotel rooms while staying as a hotel guest.

   “[…] a "snoozer," or one of those thieves who take up their quarters at hotels […]”

   “2023, Adrian and Dawn L. Bridge, Manchester Murders and Misdemeanours A snoozer, though, was a criminal who focussed exclusively upon stealing from hotels. Snoozers were looked upon as being the aristocrats of the criminal world during much of the nineteenth century.”