1. A desire to eat snack food
   "I get the munchies at night" 
2. Snack food

Encyclopedia: Munchies

• gas pump
• gas range
• gas ring
• gas service
• gas shell
• gas station
• gas stove
• gas system
• gas tank
• gas thermometer
• gas turbine
• gas up
• gas well
• gas-cooled reactor
• gas-discharge lamp
• gas-discharge tube
• gas-filled
• gas-tight
• gas-turbine ship
• gasbag
• Gascogne
• Gascon
• gasconade
• Gascony
• gaseous