planxty Share definition Flag A band in Ireland from the 1970's; Irish/Gaelic word; Also a wonderful man's name. Planxty is a genuine & unique person, true to his own beliefs and honest to the end.We saw Planxty perform in Ireland. planxty by birdyGIRL November 20, 2013 0 0 Get merch Get the planxty mug. Buy Now — $32.95 See more merch