1. The use of a word or pronunciation that distinguishes a group of people. 2. A slogan, belief, or custom that's now considered outmoded. More...
I dunno. I thinks that the word that comes out when your MINI is sliding out of control on a slick road in the middle of nowhere in the dead of winter as you're about to go into a ditch, as you instantaneously sneeze. You know, I really think you need to use the word in a sentence to complete these words of the day. Like, "I went to surf NAM, but the cult of NAManites has become so much of a shibboleth that my desktop exploded and my hair caught on fire."