Definition of shibboleth for English Language Learners. : 1  an old idea, opinion, or saying that is commonly believed and repeated but that may be seen as old-fashioned or untrue. : 2  a word or way of speaking or behaving which shows that a person belongs to a particular group.
An open space in a wood or forest. âa forest gladeâ. âglades of birchâ. âOur track took us first over smooth grassy flats, then through glades of beech forest so typical of this country.â. âOthers awaited Richard II on the battlements of Chester Castle, or in a glade of Sandiway Forest.â.
Glader Slang are new words the Gladers had created during their time in The Glade. 1  Klunk - means poop or crap.. 2  Shank - means friend or fellow..  Shuck - an expletive used to bring attention to one's annoyance or frustration.