Definition of fast day in English:

fast day

noun

  • A day when one abstains from all or some kinds of food or drink, especially as a religious observance.

    ‘the Greek Orthodox calendar has many feast days, fast days, and name days’
    • ‘A religious man attends church, observes feast days and fast days.’
    • ‘Many monasteries had fish-pools attached to give plentiful supplies for fast days.’
    • ‘Judaism's most famous fast day is Yom Kippur, when followers abstain from food and water from sundown to sundown.’
    • ‘On a fast day, drink water.’
    • ‘We each keep our religion, observe each other's holidays and fast days.’
    • ‘The Day of Atonement, a fast day, is probably the most important day in the Jewish year.’
    • ‘Indeed, Christians had their own fast day on a more regular basis, with the Church's ban on the consumption of meat on Fridays.’
    • ‘From Moscow to St. Petersberg, Russians celebrate Butter Week just before their Lent fast days.’
    • ‘In Jewish consciousness, a fast day is a time of reckoning, a time to correct a previous mistake.’
    • ‘Until well into the 20th century fish appeared on most dinner plates on the fast days of Wednesday and Friday, and during Lent.’