Breadcrumb Home > Dictionary > Index B blue law: Meaning and Definition of Find definitions for: blue' law" Pronunciation: [key] any puritanical law that forbids certain practices, esp. drinking or working on Sunday, dancing, etc. Cf. sumptuary law. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blue jeans blue-leg TrendingHere are the facts and trivia that people are buzzing about. Ramadan and Eid al-Fitr 42 Best War Movie Quotes Current Events This Week: March 2023 Recycling Facts William Shakespeare Worst U.S. Forest Fires ✖ Related Content Daily Word Quiz: recreant Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language