dall-taidbsiu A dark or mysterious vision

taidbsiu 1 showing, pointing out (in O. Ir. Glosses generally in more abstract sense manifesting, demonstrating, proving); Outside the Glosses generally showing, giving to view in physical sense; to exhibit; appearance, look, seeming, seeing 2 ostentation, display, proud appearance; spectacle; vision, dream, phantasm; ghost, apparition, image (of a particular person or thing)