Even more so than our last “Word for Thought”, copacetic, the origins of the Merriam-Webster Word of the Day for March 26th are Hebraic.  The word was shibboleth.
1 : catchword, slogan
2 : a widely held belief or truism
3 : a custom or usage regarded as distinctive of a particular group
 
M-W’s background on the word:
The Bible’s [...]