1. (of liquids) available by turning a tap
   "ale on tap"; "hot and cold running water on tap" 
2. Available for immediate use
   "extra personnel on tap"; "other sports and entertainment facilities are on tap"; "there are numerous projects on tap"

See also: available

Encyclopedia: On tap

• window shade
• window trimmer
• window washer
• window-dress
• window-shop
• window-shopper
• window-washing
• windowless
• windowpane
• windowpane oyster
• Windows
• windowsill
• windpipe
• windrow
• windscreen
• windscreen wiper
• windshield
• windshield wiper
• windsock
• Windsor
• Windsor chair
• Windsor green
• Windsor knot
• Windsor tie
• windstorm