A nicer and less explicit way of saying vagina so others do not get offended by saying the actual word. Can also be used as a name of insult. Most commonly used in places such as work or in church.
Person A: "Julian, just man up and go get the football from that german shepard"
Person B: "but that dog is big, it might bite me!!"
Person A: "Julian stop being such a Vajar!"
Person A: "check out the vajar on that chick!"
Person B: "i know, i havent seen one like that since paris hilton"