Ma'anar ƙamus na kalmar "babban direba" yana nufin mutumin da ya kaurace wa shan barasa a wurin taron jama'a ko taron don ya zama alhakin korar wasu da suka sha barasa lafiya a gida. Manufar direban da aka keɓe shi ne don hana tuƙi cikin maye da kuma rage haɗarin haɗari ko raunin da ke haifar da tuki a ƙarƙashin rinjayar.
