1. Lose consciousness due to a sudden trauma, for example
   - zonk out, pass out, black out 
2. Fall asleep fast, as when one is extremely tired
   "after the long drive, we zonked out and slept for 10 hours"
   - zonk out

Derived forms: zonked, zonking, zonks

Type of: change state, dope off, doze off, drift off, drop off, drowse off, fall asleep, flake out, nod off, turn

Encyclopedia: Zonk

• doubt
• doubtable
• doubter
• doubtful
• doubtfully
• doubtfulness
• doubting
• doubting Thomas
• doubtless
• doubtlessly
• douce
• douceur
• douche
• douche bag
• dough
• doughboy
• doughnut
• doughnut-shaped
• doughtily
• doughty
• doughy
• Douglas
• Douglas Elton Fairbanks
• Douglas Fairbanks
• Douglas Fairbanks Jr.