blank canvas. 1) A situation or object in which nothing has yet been planned, so that someone is free to decide what should happen or be done. 2) 228 Enigma Ave. ------- 228 Enigma Ave truly defines a blank canvas. This semi-wooded 2.12 acre lot awaits you to build your dream home, pool, barn, play area and other fun stuff. The meandering trail will lead you through various species of trees native to Texas including the Mountain Cedar, Post Oak, Live Oak, the colorful Texas Red Oak and Texas Mountain Laurel