from The Century Dictionary and Cyclopedia
- n. A day on which fasting is observed; specifically, a day appointed for fasting as a religious observance by some recognized authority, ecclesiastical or civil; in the most restricted ecclesiastical sense, a day on which, or on part of which, total abstinence from food is prescribed, in contradistinction to a day on which a limitation is imposed on the kind or quantity of food to be taken, called a day of abstinence. See fast, n.
- n. In Scotland, a day set apart for humiliation and prayer; specifically, a day thus observed during the week immediately preceding certain celebrations of the Lord's supper.
Sorry, no etymologies found.