The term shibulet is mentioned in the context of Masonic terminology, specifically in Albert Pike's work, The Book of the Words. It is noted that the word does not have a clear significance in Freemasonry today, but it is believed that there was originally a concealed meaning associated with it. Pike discusses how words used in Masonic degrees often had hidden meanings that were not readily apparent to modern practitioners. He suggests that the pronunciation of shibulet may have been used to identify members of a particular tribe, similar to how different pronunciations were noted among Englishmen and Scotsmen.