fast of the firstborn

English Thesaurus

1. (Judaism) a minor fast day on Nissan 14 that is observed only by firstborn males; it is observed on the day before Passover (noun.time)

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

domain category	:	judaism,
definition	:	the monotheistic religion of the Jews having its spiritual and ethical principles embodied chiefly in the Torah and in the Talmud (noun.cognition)