fast of the firstborn

1. 1.

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

   Broaderminor fast day

   Judaism

Questions about fast of the firstborn

What does fast of the firstborn mean?

fast of the firstborn means "(Judaism) a minor fast day on Nissan 14 that is observed only by firstborn males; it is observed on the day before Passover".

Is fast of the firstborn a common word?

fast of the firstborn is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.