Search Result for "holy day of obligation":
Wordnet 3.0

NOUN (1)

1. a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion;


WordNet (r) 3.0 (2006):

holy day of obligation n 1: a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion