1) Alarm clock button 2) Be sleepy 3) Big bore 4) Brief sleep 5) Button on an alarm clock 6) Button on many a radio 7) Buzzer-beating button 8) Cat nap 9) Cat sleep 10) Catch some winks 11) Catnap 12) Certain time-out 13) Clock radio button 14) Clock-radio button 15) Doze 16) Drop off 17) Drop off for a bit 1) Catch forty winks 2) Catch some zs 3) Catnap 4) Doze 5) Fall asleep 6) Hit the sack 7) Nap 8) Nod off 9) Rest 10) Siesta 11) Sleep 12) Slumber 13) Takeasiesta 
• (n.) A short sleep; a nap. • (v. i.) To doze; to drowse; to take a short nap; to slumber.
Snooze (snōz) noun [ Scot. snooze to sleep; confer Dan. & Swedish snus snuff.] A short sleep; a nap. [ Colloq.]Snooze intransitive verb [ imperfect & past participle Snoozed ; present participle & verbal noun Snoozing .] To doze; to drowse; to take a short nap; to slumber. [ Colloq.] 
Snooze is slang for to sleep.
[v] - sleep lightly or for a short period of time