The crew was in the forecastlea lolling, snoozy lot, now desperately yawning for lack of diversion.
“Well, this scooting through the air—hot air too—makes one snoozy,” explained Fullerton, uttering a cavernous yawn.
1789, cant word, of unknown origin, perhaps echoic of a snore. Related: Snoozed; snoozing. The noun meaning "a short nap" is from 1793. Snooze-alarm is from 1965.