SNOOZE
NOUNS
1941 — ZIZ — ZIZZ a snooze, a nap, a brief sleep → sl., orig. military usage
1945 — ZIZZY a sleep, a nap, a snooze → World War II Brit. armed forces usage
VERBS
1930 — ZIZ — ZIZZ to have a snooze or nap; to sleep lightly or briefly → sl.