Bayou Teche Syllabification: (Bay·ou Teche)Pronunciation: /ˈbīˌo͞o ˈteSH/Entry from US DictionaryDefinition of Bayou Teche a water route in south central Louisiana, at the heart of Cajun Country. Also called the Teche.Bayou Teche in other Oxford dictionaries Definition of Bayou Teche in the US English dictionary