yanker UK /ˈjæ̞ŋkə/US /ˈjæ̝ŋkɚ/ noun3 •Someone who yanks, or gives a sudden hard pullHe's a yanker of braids, a tousler of bangs […] — 1991 •Someone who pranks someone, who yanks chains, such as with crank calls. •(Scotland) A brazen lie"Ay, billy, that is a yanker !" said Tam aside : " When ane is gaun to tell a lie, there's naething like telling a plumper at aince, and being done wi't — 1822 formsyankers