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

• click
• click beetle
• click off
• click open
• click-clack
• clickable
• clicker
• clickety-clack
• clickety-click
• client
• client-centered therapy
• client-server
• clientage
• clientele
• cliff
• cliff diving
• cliff dweller
• cliff dwelling
• cliff penstemon
• cliff rose
• cliff swallow
• cliff-brake
• cliff-hanging
• cliffhanger
• Clifford Odets