on tapa) DFDbeer that is on tap comes from a barrel 〔啤酒〕桶装的
b) informalAVAILABLE something that is on tap is ready to use when you need it 可随时取用[使用]的 We’ve got all the information on tap. 我们有各种信息随时可以利用。
on tap• Plenty of good food will be on tap for the Memorial Day celebration.
→ on tap at tap1(1)