Definition of fast noun from the Oxford Advanced Learner's Dictionary



BrE BrE//fɑːst//
; NAmE NAmE//fæst//
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a period during which you do not eat food, especially for religious or health reasons to go on a fast to break (= end) your fast See related entries: Diet Word Originnoun Old English fæstan (verb), of Germanic origin; related to Dutch vasten and German fasten, also to Old Norse fasta, the source of the noun.Extra examples All members of the religious community keep these fasts. In the evening the people break their fast. He observes the fast of Ramadan. In Cyprus this soup is served on Easter morning to break the long Lenten fast.
See the Oxford Advanced American Dictionary entry: fast