any of several hundred natural compounds, usually of vegetable origin, having a bitter taste, and not admitting of any chemical classification.
Principal vs. PrincipleIs the head of a school called a principal or a principle? These two words are frustratingly similar, leaving even the most experienced English speakers to second-guess which word means what. So, in today’s lesson, we’ll discuss the distinct meanings between these easy-to-confuse terms— and leave you with a little trick to help differentiate between your principals and your principles. What is a principal? A …
Origin of bitter principle
First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for bitter principle
any of various bitter-tasting substances, such as aloin, usually extracted from plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012