intr.v., fast·ed, fast·ing, fasts.
- To abstain from food.
- To eat very little or abstain from certain foods, especially as a religious discipline.
- The act or practice of abstaining from or eating very little food.
- A period of such abstention or self-denial.
[Middle English fasten, from Old English fæstan.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.