zird Share definition Flag zird someone or something that is/are very uncool and are more than very annoying. t: hi there, I can do the hardest calculus you could ever imagine. J: woe you are so zird / you are possibly the zirdest person I know. zird by jeff cosgrave February 25, 2008 0 0 Get merch Get the zird mug. Buy Now — $32.95 See more merch