(intransitive) To practice religious abstinence, especially from food. / (intransitive) To reduce or limit one's nutrition intake for medical or health reasons, to diet.

(dated) Firmly or securely fixed in place; stable. / Firm against attack; fortified by nature or art; impregnable; strong.

(Britain, rail transport) A train that calls at only some stations it passes between its origin and destination, typically just the principal stations

In a firm or secure manner, securely; in such a way as not to be moved; safe, sound . / (of sleeping) Deeply or soundly . / Immediately following in place or time; close, very near .

The act or practice of fasting, religious abstinence from food / One of the fasting periods in the liturgical year

(archery) Short for "stand fast", a warning not to pass between the arrow and the target

Initialism of Focused assessment with sonography for trauma.

(medicine, pathology) Acronym of facial drooping, arm weakness, speech difficulty, time. A mnemonic for diagnosing a cerebrovascular accident (“CVA”) or stroke. The mnemonic F-A-S-T also was coined in recognition of the word fast, as a need for speedy diagnosis and treatment.

A surname.

plural of Fast