chin-wag Share definition Flag Also chinwag. A conversation, the term comes from one's chin appearing to wag during conversation. Most commonly used in Eire or the UK. Next week we'll be having a chin-wag with the delivery company. There are delivering too slowly. chin-wag by Gumba Gumba April 14, 2004 0 0 Get merch Get the chin-wag mug. Buy Now — $32.95 See more merch