verb (used without object), noun Slang.
Related formsyack·er, noun
Definition for yack (2 of 2)
verb (used without object), yakked, yak·king.
Origin of yak2
Related formsyak·ker, noun
Examples from the Web for yack
Church a yack (or watch), to take the works of a watch from its original case, and put them into another one, to avoid detection.The Slang Dictionary|John Camden Hotten
This latter name accords with Macgillivray's mode of spelling its note, yack chuck, harsh enough, no one will deny.British Birds in their Haunts|Rev. C. A. Johns
Tom perceived Andrew's useless emulation, and with a sound translated by 'yack,' sent his leg out a long way.Evan Harrington, Complete|George Meredith
Yack, he picks up the trail from here to where you can follow easy.The Quirt|B.M. Bower