also occasionally “nob” 1 n penis. As well as referring to the part of the body, it can be used as an insult. 2 v screw; bone. This implies active use of said penis and is similar to “shag.” This word appears regularly in American place names, much to the amusement of Brits. Two British favourites are Bald Knob, Arkansas and Knob Lick, Missouri.