stop-tap

From stop +‎ tap.

stop-tap (plural stop-taps)

1. A stopcock.
2. (Wales) Last orders.
   • 1998, Peter Jackson, Lions of Wales, page 139:

     It was almost stop-tap time when my name came up, and that was the excuse my friends had been waiting for to shower me with beer.

   • 2010, Gwen Davies, ‘The Professionals’, translated by William Owen Roberts, Best European Fiction 2011:

     But there we were together on the pavement after stop tap, him cadging a light off me.