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.
Wiktionary (0.00 / 0 votes) Rate this definition: synonym (Noun). A word or phrase with a meaning that is the same as, or very similar to, another word or phrase. Happy is a synonym of glad.synonym (Noun). Any of the formal names for the taxon, including the valid name (i.e. the senior synonym).ynonym. Synonyms are words with the same or similar meanings. Words that are synonyms are said to be synonymous, and the state of being a synonym is called synonymy. The word comes from Ancient Greek syn and onoma. An example of synonyms are the words begin and commence.