holy day of obligation is a noun meaning "a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion". It carries one recorded sense.
a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion
Definitions, synonyms and semantic relations for holy day of obligation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.