"pitch accent." YourDictionary, n.d. Web. 09 June 2018. <http://www.yourdictionary.com/pitch-accent>.
pitch accent. (n.d.). Retrieved June 09th, 2018, from http://www.yourdictionary.com/pitch-accent
(plural pitch accents)
(linguistics) A term of convenience for a variety of restricted tone systems that use variations in pitch to give prominence to a syllable or mora within a word. The placement of this tone or the way it is realized can give different meanings to otherwise similar words.
English Wiktionary. Available under CC-BY-SA license.