fast day

English Thesaurus

1. a day designated for fasting (noun.time)

hypernym	:	holy day, religious holiday,
definition	:	a day specified for religious observance (noun.time)

hyponym	:	major fast day,
definition	:	one of two major fast days on the Jewish calendar (noun.time)

hyponym	:	minor fast day,
definition	:	one of five minor fast days on the Jewish calendar (noun.time)