from G3522; abstinence (from lack of food, or voluntary and religious); specially, the fast of the Day of Atonement:-- fast(-ing).
a fasting, fast
a voluntary, as a religious exercise
of private fasting
the public fast as prescribed by the Mosaic Law and kept yearly on the great day of atonement, the tenth of the month of Tisri (the month Tisri comprises a part of our September and October); the fast accordingly, occurred in the autumn when navigation was usually dangerous on account of storms