Wiktionary
his nob
n. (context card games chiefly cribbage English) a jack; a knave
Usage examples of "his nob".
Wearily Mason pulls on Oil-cloths, tugs his Service-Grade Beaver over his Nob, and emerges to mill about as perplex'd as the rest, hoping no one will look to him for Leadership.
If I find out, said the other, Ill knock his nob for im, that I will.