Top Definition
A type of music in which the lyrics are so obscure or unknown to most people that listening to them requires a dictionary or thesaurus. Opeth is a primary example. Thesauruscore is a rougher or more brutal form of Dictionary Rock
Person A: Do you like Thesauruscore?
Person B: No way man, the lyrics are too pretentious and it sounds rough
by Dancin Jesus October 30, 2005

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