tap off
Upper Intermediate (B2) neutral
To let some liquid out through a tap, or to touch your travel card on a reader when you leave the bus or train.
"The brewer tapped off a sample from the barrel to check the flavour."
To let some liquid out through a tap, or to touch your travel card on a reader when you leave the bus or train.
"The brewer tapped off a sample from the barrel to check the flavour."