Yeah ka Share definition Flag word used by the people of the African descent which is the shorter version of yeah cause or yeah nikka. Person1: "Hey do you want some fried chiken, water melon and grape soda?" Person2: "YEAH KA!" Yeah ka by Eli R. May 21, 2008 0 0 Get merch Get the Yeah ka mug. Buy Now — $32.95 See more merch