Waucht

1893, Robert Louis Stevenson, David Balfour [aka Catriona], 2009, page 228, “But ye′ll be for a bite or ye go?” said he. “Neither bite nor sup,” said I. “I had a good waucht of milk in by Ratho.”

“Bring us a bottle, then.” “Bring twa,” here interrupted Johnny Yuill, in a loud voice; “for I′m dooms dry, and ′ll sen′ owre a bottle to my ain share at a waucht, and I′m sure ye′ll manage the ither yersel, Provost; and, if ye canna, I′ll help ye wi′ that, too.”

He was singin′ and roarin′ wi′ the loudest, and takin′ great wauchts frae the bowl, far mair than was guid for him.

2000, Association for Scottish Literary Studies, Scottish Literary Journal, Volume 27, Issue 1, page 45, Scott, on the other hand, says of him that he ‘wauchted [quaffed] the bluid-reid liquor doun’.

Eftir this the Erles and thair kin passis to the Tolbuith, with the haill ministerie: all ar maid burgessis of this toun; the ministers with the rest. At euin^([even]), nathing bot wauchting.

[…]while with Huntly, who in April 1599 had been created Marquis, the King now spent much of his time, “wauchting and drinking.”