From German - English Ding/FreeDict dictionary ver. 1.9-fd1: Pius /pˈiːʊs/ <masc, n, sg> [min.] blank centre <n>, centre hole <n> [Br.] , blank center <n>, center hole <n> [Am.]
Pius /pˈiːʊs/ <masc, n, sg> [min.] blank centre <n>, centre hole <n> [Br.] , blank center <n>, center hole <n> [Am.]