/ Dictionary / Index B bylaw: Meaning and Definition of Find definitions for: by•law Pronunciation: (bī'lô"), [key] — n. a standing rule governing the regulation of a corporation's or society's internal affairs. a subsidiary law. an ordinance of a municipality or community. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bylaw (Thesaurus) bylane byline Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language